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 heptalogy A set of seven works of art that are connected, and that can be seen either as a single work or as seven individual works. heptaloop A nucleic acid motif composed of seven loops heptaluminium Seven atoms of aluminium in a chemical compound. Al₇ heptamagnesium Seven atoms of magnesium in a chemical compound. heptamanganese Seven atoms of manganese in a chemical compound. Mg₇ heptamer An oligomer having seven subunits. heptameric of or pertaining to a heptamer heptameride A thing having seven parts or divisions. heptamerization The formation of heptamers heptamerize To form a heptamer heptameron A literary work whose action covers a period of seven days. heptamerous Comprising seven parts or members, as with seven petals on a flower. heptameter a line or verse containing seven metrical feet heptamethine Any of a group of cyanine dyes that have a line of seven -CH= groups heptamethoxyflavone Any hepta-methoxy derivative of flavone, but especially 3,5,6,7,8,3',4'-heptamethoxyflavone, a citrus flavonoid that has biochemical activity in the brain heptamethyl Seven methyl groups in a compound heptamethylene The divalent radical obtained by removing a hydrogen atom from each end of a n-heptane molecule. heptamethylnonane The aliphatic hydrocarbon with the assigned cetane number of zero. heptametric Of or pertaining to a heptameter heptaminol An amino alcohol classified as a vasodilator. heptamolybdate The oxyanion of molybdenum Mo₇O₂₄⁶⁻; any salt containing this anion heptamorphic Having seven forms heptamutant An organism that has seven mutations heptanal heptanaldehyde heptanaldehyde The alkyl aldehyde that has seven carbon atoms; it has a strong fruity odour, and is used in flavouring and perfumes heptandrian heptandrous heptandrous Having seven stamens. heptane Any of the nine isomers of the saturated aliphatic hydrocarbon C₇H₁₆, obtained from petroleum, especially n-heptane (CH₃(CH₂)₅CH₃) Heptanese The Ionian Islands. Heptanesia The Ionian Islands. Heptanesian Of or relating to Heptanesia. heptangle A seven-pointed star with the construction lines retained. heptangular heptagonal heptanitride Any nitride containing seven atoms of nitrogen heptanitrocubane An experimental high explosive based on the cubane molecule and closely related to octanitrocubane. heptanoate Any salt or ester of heptanoic acid. heptanoic of or pertaining to heptanoic acid or its derivatives; enanthic heptanoid Any organic compound in which substituents are attached to each end of a heptanone chain heptanol Any of many isomers of the saturated aliphatic alcohol having seven carbon atoms heptanone Any of three isomeric ketones derived from heptane heptanonitrile A nitrile derived from heptane. heptanoyl The univalent radical derived from heptanoic acid by loss of the hydroxy group heptanuclear Having, or involving seven nuclei heptanucleotide A codon containing seven nucleotides. heptaoxo A chemical compound with seven oxygen atoms with double bonds. heptaoxodisilicate Synonym of pyrosilicate. heptaparallelohedron cuboctahedron heptapeptide consisting of seven amino acids linked by peptide bonds heptapeptidic Relating to or composed of heptapeptides. heptapetalous Having seven petals. heptaphane In the nomenclature of complex organic compounds, any linear phane containing seven nodes (or superatoms) heptaphosphorus seven atoms of phosphorus in a compound heptaphyllous Having seven leaves. heptaplatinum Seven atoms of platinum in a chemical compound. Pt₇ heptaplex Having seven parts; sevenfold. heptaploid Having seven complete sets of chromosomes in a single cell. heptaploidy The property of being heptaploid. heptapod Something with seven legs. heptapodal Having seven legs. heptapody A measure or series consisting of seven feet. heptaprenyl A polyprenyl group formed from seven isoprenyl moieties heptapseudopeptide A pseudopeptide composed of seven units heptapterid Any catfish in the family Heptapteridae. heptaquark Any hypothetical composite particle composed of seven quarks or antiquarks. heptarch a heptarchist heptarchal Of or relating to a heptarchy. heptarchic Of or pertaining to a heptarchy. heptarchist A ruler of one division of a heptarchy. heptarchy A government of seven people. heptasaccharide Any oligosaccharide having seven sugar residues heptaselenide any selenide containing seven selenium atoms in each molecule heptaseme a unit of seven morae or units of time. heptasemic containing seven morae or units of time. heptasilver Seven atoms of silver in a chemical compound. heptasodium Seven atoms of sodium in a chemical compound. heptastich A seven-lined or seven-versed poem. heptastyle having seven columns heptasulfate A chemical compound containing seven sulfate ions. (SO₄)₇ heptasulfide Any compound having seven sulfide groups, or seven linked sulfur atoms heptasulphide Any sulphide containing two sulphur atoms in each molecule. heptasyllabic Having seven syllables. heptasyllable line of verse with seven syllables Heptateuch The first seven books of the Hebrew Bible. heptathiocane A saturated eight-membered heterocycle containing one carbon atom and seven sulfur atoms heptathlete An athlete who competes in the heptathlon. heptathlon An athletic contest comprising seven events; contested mostly by women, for whom this is an Olympic sport. heptatitanium Seven atoms of titanium in a chemical compound. Ti₇ heptatomic Composed of seven atoms heptatonic Describing a mode or scale that has seven pitches in an octave heptatriacontane Any of very many isomers of the aliphatic hydrocarbon having thirty-seven carbon atoms, but especially n-heptatriacontane CH₃(CH₂)₃₅CH₃ heptatriacontanoic Of or pertaining to heptatriacontanoic acid or its derivatives heptatriene Any aliphatic triene containing seven carbon atoms heptatriyne Any aliphatic triyne containing seven carbon atoms heptauranyl Seven uranyl functional groups in a chemical compound. heptavalence The property of being heptavalent. heptavalency The condition of being heptavalent heptavalent Having an atomic valence of 7. heptaverine An antispasmodic drug. heptaxodontid Any extinct rodent in the family Heptaxodontidae. heptazinc Seven atoms of zinc in a chemical compound. Zn₇ heptazine A chemical compound consisting of a planar triangular core group, C₆N₇, or three fused triazine rings, with three substituents at the corners of the triangle. hepten A derivative of heptene where the next name part starts with a vowel, often "-one" or "-ol". heptenal Any of several isomeric unsaturated aldehydes that have seven carbon atoms. heptene Any of many isomers of the alkene having seven carbon atoms and one double bond; a mixture of such isomers used in lubricants etc heptenoate Any salt or ester of a heptenoic acid heptenoic Relating to a heptenoic acid or derivative heptenone Any unsaturated aliphatic ketone that has seven carbon atoms and one double bond heptenyl A radical derived from a heptene hepteract A seven-dimensional hypercube heptet septet heptillion Synonym of septillion. heptitol Any alditol having seven carbon atoms heptode A compound thermionic valve containing a triode and tetrode; was used in superheterodyne radio receivers. heptoic Formally derived from heptane or from heptoic acid. heptol Any polyol (sugar alcohol) that has seven hydroxy groups heptolamide An antidiabetic drug. heptomino A polyomino consisting of seven squares. heptone A liquid hydrocarbon, C₇H₁₀, of the valylene series. Heptonstall A village and civil parish in Calderdale district, West Yorkshire, England (OS grid ref SD988279). heptopyranose The pyranose form of a heptose heptopyranoside Any glycoside of a heptopyranose heptose A sugar or saccharide containing seven carbon atoms. heptosyl Any univalent radical derived from a heptose heptosylation Any reaction that adds a heptosyl group heptosyltransferase Any transferase that transfers heptose groups heptoxide any oxide containing seven oxygen atoms in each molecule heptulose Any heptose that is a ketose heptuple Synonym of septuple. heptuplet One of a group of seven, particularly one of seven babies born at the same birth. heptyl Any of many isomeric univalent hydrocarbon radicals, C₇H₁₅, formally derived from heptane by the loss of a hydrogen atom. heptylamine Any of many isomeric amines derived from heptane, but especially the primary amine CH₃(CH₂)₆NH₂ heptylene heptene heptylic Pertaining to, or derived from, heptyl or heptane. heptyne Any alkyne with one triple bond and the molecular formula C₇H₁₂. Hepu A county of Beihai, Guangxi autonomous region, China. Hepworth A village and civil parish in West Suffolk district, Suffolk, England (OS grid ref TL9874). Hepzibah A female given name, variant of Hephzibah. hepzidine A tetracyclic thymoleptic agent. heqat An Ancient Egyptian dry measure of volume equivalent to 10 hins (or about 4.8 litres). Heqet An Egyptian goddess of fertility, represented in the form of a frog. Heqing A county of Dali prefecture, Yunnan, China. Hequ A county of Xinzhou, Shanxi, China. her Belonging to her (belonging to that female person or animal, or in poetic or old-fashioned language that ship, city, season, etc). hera A female hero; a heroine, especially in lesbian or feminist circles. Herachandra An Indian male given name. Heraclea The name of numerous Hellenistic cities named after Heracles. Heracleian Relating to Heracles, the Greek equivalent of Hercules heracleid Any member of the Heracleidae, the descendants of Hercules. Heracleidae The descendants of Heracles. heraclenol The coumarin derivative 9-(2,3-dihydroxy-3-methylbutoxy)furo[3,2-g]chromen-7-one found in some citrus plants