Skip to content A B C D E F G H I J K L M N O P Q R S T U V W X Y Z tetrachenium A fruit formed by four indehiscent parts tetrachloride any chloride containing four chlorine atoms in each molecule tetrachlorinated Modified by the addition of four atoms of chlorine tetrachloro Four chlorine atoms in a compound tetrachloroaurate The monovalent anion AuCl₄⁻ formally derived from the aurate anion; any salt containing this anion tetrachlorobiphenyl Either of forty-two isomers of the polychlorinated biphenyl containing four chlorine atoms tetrachlorocuprate The anion CuCl₄²⁻; any salt containing this anion tetrachlorocyclohexene Any tetrachloro derivative of cyclohexene, but especially 3,4,5,6-tetrachlorocyclohexene tetrachlorocyclohexenol Any tetrachloro derivative of a cyclohexenol, but especially 2,2,6,6-tetrachlorocyclohexan-1-ol tetrachlorodibenzodioxin A highly toxic polychlorinated dibenzo-p-dioxin with chemical formula C₁₂H₄Cl₄O₂. tetrachlorodiphenylethane Synonym of dichlorodiphenyldichloroethane. tetrachloroethane Either of two isomeric chemical compounds: 1,1,1,2-Tetrachloroethane (used as a solvent and in varnishes) and 1,1,2,2-Tetrachloroethane (used as a solvent and refrigerant) tetrachloroethene The chlorinated derivative of ethylene Cl₂C=CCl₂; it is widely used for the dry cleaning of fabrics and for metal-degreasing. tetrachloroethoxy A univalent radical derived from ethoxy by substitution with four chlorine atoms. tetrachloroethylene A liquid chlorocarbon with the formula C₂Cl₄, commonly used in dry cleaning and metal degreasing. tetrachlorogermane The binary compound GeCl₄ that is the germanium analog of carbon tetrachloride tetrachlorohydroquinone The tetrachloro derivative of hydroquinone 2,3,5,6-tetrachlorobenzene-1,4-diol tetrachloroisophthalonitrile chlorothalonil tetrachloromethane Carbon tetrachloride. tetrachloropalladate The anion PdCl₄²⁻; any salt containing this anion tetrachlorophenol Any of three isomeric tetrachloro derivatives of phenol tetrachlorophenolphthalein Any tetrachloro derivative of phenolphthalein, but especially 4,5,6,7-tetrachlorophenolphthalein tetrachloroplatinate The anion PtCl₄²⁻; any salt containing this anion tetrachlorosilane silicon tetrachloride tetrachlorvinphos An organophosphate insecticide used to kill fleas and ticks. tetrachord Any set of four different pitch classes. tetrachordal Relating to a tetrachord. tetrachordo A tetrachord (four-stringed) bouzouki; a type of chordophone. tetrachoric Between two dichotomous variables tetrachotomous Dividing or branching into four equal pieces. tetrachotomy Division of a whole into four parts. tetrachromacy The quality of having four independent channels for conveying color information in the eye. tetrachromat One who is capable of identifying four primary colors; one whose vision exhibits tetrachromacy. tetrachromate Any chromate having four chromium atoms tetrachromatic Having four independent channels for conveying color information. tetrachrome A biological stain composed of a mixture of fast green, celestine blue and fuchsin tetrachromic Of or relating to four colours; tetrachromatic. tetracid tetrabasic tetracistronic Relating to or composed of four cistrons. tetraclone A four-rayed spicule in the skeleton of some sponges tetracoccous Having four cocci, or carpels. tetracolon A stanza or division in lyric poetry, consisting of four verses or lines. tetracolored Having four colors. tetracolpate Having four grooves, or colpi, on each grain. tetracolporate Having four colpi and pores. tetracomplex A complex of four homeobox genes tetraconazole A systemic fungicide 1-[2-(2,4-dichlorophenyl)-3-(1,1,2,2-tetrafluoroethoxy)propyl]1,2,4-triazole tetraconch A building, especially a church, that has four apses tetracontadigon A polygon with forty-two sides and forty-two angles. tetracontagon A forty-sided polygon. tetracontakaihexagon A polygon with forty-six sides and forty-six angles. tetracontane Any of very many isomers of the aliphatic hydrocarbon having forty carbon atoms, but especially n-tetracontane CH₃(CH₂)₃₈CH₃ tetracoordinate Having a coordination number of four. tetracoordinated Having four coordinate bonds tetracopeptide Any polypeptide containing twenty-four peptide units tetracopper Four atoms of copper in a chemical compound. tetracoral Any member of the order Rugosa (or Tetracoralla) of extinct corals. tetracosactide A synthetic analogue of adrenocorticotropic hormone. tetracosactrin Synonym of tetracosactide. tetracosahydrate A hydrate whose solid contains twenty four molecules of water of crystallization per molecule, or per unit cell. 24H₂O tetracosane An alkane hydrocarbon with the structural formula CH₃(CH₂)₂₂CH₃. tetracosanoate Any salt or ester of tetracosanoic acid. tetracosanoic Related to tetracosanoic acid or its derivatives tetracosanol An aliphatic alcohol that has twenty-four carbon atoms tetracosene Any of very many isomeric unsaturated aliphatic hydrocarbons that have 24 carbon atoms and one double bond tetracrepid Having a tetraxonic crepis. tetracritical Describing a condition, in condensed matter, in which four phases are in equilibrium tetracriticality The property of being tetracritical. tetracrotic Of the arterial pulse: exhibiting a quadruple beat. tetract tetractinal; having four rays tetractinal Having four rays. tetractine tetractinal; having four rays tetractinellid Any sponge of the order Tetractinellida or family Tetractinellidae. tetractinomorph Any member of the subclass Tetractinomorpha of sponges. tetractys A triangular figure consisting of ten points arranged in four rows, representing the fourth triangular number and having mystical significance to the Pythagoreans. tetracube A polycube composed of four cubes. tetraculture A coculture of four cell types tetracuspid An astroid. tetracyanate A chemical compound with four cyanate groups or ions. tetracyano Four cyano groups in a compound tetracyanocuprate The anion Cu(CN)₄²⁻; any salt containing this anion tetracyanoethylene The unsaturated nitrile (N≡C)₂C=C(C≡N)₂ used in the manufacture of dyes tetracyanonickelate A chemical compound containing an anion composed of nickel and four cyanide ligands. [Ni(CN)₄]²⁻ tetracyanoquinodimethane The cyanocarbon with the chemical formula (NC)₂CC₆H₄C(CN)₂. tetracycle Any organic compound, containing four rings, related to tetracycline tetracyclic Having four rings. tetracycline A yellow crystalline broad-spectrum antibiotic C₂₂H₂₄N₂O₈ produced by streptomyces or synthetically. tetracyclization cyclotetramerization tetracyclo Having four rings tetracyclone tetraphenylcyclopentadienone tetracysteine A protein motif, that contains four cysteine residues, that binds biarsenicals tetrad A group of four things. tetradactyl Having four digits on a limb. tetradactylous Having four digits on the foot or hand. tetradactyly The condition of having four digits on a limb, as in many amphibians, birds, and theropods. tetradecabromide Any compound containing fourteen bromide ions tetradecacopper Fourteen atoms of copper in a chemical compound (Cu₁₄). tetradecadienoate Any salt or ester of a tetradecadienoic acid tetradecagon A polygon having fourteen sides and fourteen angles. tetradecagonal Having the form of a tetradecagon tetradecahedral In the form of a tetradecahedron. tetradecahedron A polyhedron with fourteen faces. tetradecamanganese Fourteen atoms of manganese in a chemical compound. tetradecamer An oligomer having fourteen subunits. tetradecameric Of or pertaining to a tetradecamer. tetradecanal The aliphatic aldehyde that has fourteen carbon atoms. tetradecane Any of very many isomers of the aliphatic hydrocarbon having fourteen carbon atoms (C₁₄H₃₀) tetradecanedioate Any salt or ester of tetradecanedioic acid tetradecanoate Any salt or ester of tetradecanoic acid. tetradecanoic Of or pertaining to tetradecanoic acid or its derivatives tetradecanol Any saturated aliphatic alcohol that has twenty-four carbon atoms, but especially n-tetradecanol tetradecanoyl The univalent radical derived from tetradecanoic acid by loss of the hydroxy group; myristoyl tetradecaoxide Any oxide containing fourteen oxygen atoms tetradecapeptide An oligopeptide composed of fourteen amino acid residues tetradecapod Any organism with fourteen feet. tetradecapodous Having fourteen feet. tetradecasaccharide Any oligosaccharide that has fourteen sugar units tetradecasyllabic Having fourteen syllables. tetradecenal Any of several isomeric aliphatic aldehydes that have fourteen carbon atoms and one double bond tetradecene Any of several isomeric aliphatic hydrocarbons that have fourteen carbon atoms and one double bond, but especially 1-tetradecene tetradecenoate Any salt or ester of a tetradecenoic acid, but especially a myristoleate tetradecenoic Having fourteen carbon atoms; only used in tetradecenoic acid and derivatives. tetradecenoyl The univalent radical derived from tetradecenoic acid by loss of the hydroxy group. tetradecenyl A univalent radical derived from tetradecene tetradecimal Based on the number 14; using the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C and D. tetradecyl The univalent radical derived from tetradecane. tetradecyltrimethylammonium The quaternary ammonium cation containing one tetradecyl and three methyl groups; the bromide spontaneously forms micelles in water, similar to primitive cells tetradecyne Any aliphatic hydrocarbon having a chain of fourteen carbon atoms and containing one triple bond. tetradelphous Having its stamens fused together at least partly by the filaments so that they form four separate groups, some of which may contain a single stamen. tetradelphy Presence of tetradelphous stamen. tetradentate Describing a chelating agent that has four groups that attach to a metal ion tetradepsipeptide A tetrameric depsipeptide tetradeuterated deuterated in four positions, or with four atoms of deuterium tetradic Of or relating to a tetrad. tetradicity The property of being tetradic. tetradifon An insecticide, 1,2,4-trichloro-5-(4-chlorophenyl)sulfonylbenzene. tetradiploidal tetradiploid tetradisulfide Any organic compound that has four disulfide groups Tetradite Synonym of tetratheist. tetradomain Having four domains tetradonematid Any nematode in the family Tetradonematidae. tetradrachm A silver coin in Ancient Greece, equivalent to four drachms. tetradymia Any member of the genus Tetradymia of flowering plants. tetradymite a grey mineral that is mostly a mixed sulfide of bismuth and tellurium tetradynamous Belonging to the former order Tetradynamia; having six stamens, four of which are uniformly longer than the others. tetraene Any compound having four carbon-carbon double bonds tetraenoic Relating to any tetraenoic acid or its derivatives tetraenol Any aliphaticalcohol that has four double bonds tetraenyl A univalent radical derived from a tetraene tetraeteris Synonym of quadrennium: A four-year period, particularly (historical) those used in ancient Egyptian and Greek astronomical calculations.