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 acroposthitis Inflammation of the akroposthion. acropsin Any of a group of opsins found in corals of the genus Acropora. acropustulosis acrodermatitis with pustular involvement acrorhagus Any of a set of marginal tubercles of sea anemones containing specialized nematocysts acroscleroderma Synonym of sclerodactyly. acrosclerosis sclerosis of the fingers acroscopic Toward or facing the apex. acrose A racemic form of fructose acrosin A proteolytic enzyme, found in the acrosome of spermatozoa, that enables penetration of the egg. acrosine Synonym of acrosin. acroski Ski ballet. acrosomal Of or pertaining to acrosomes acrosome A structure forming the end of the head of a spermatozoon. acrosomeless Having no acrosomes acrosomic Synonym of acrosomal. acrosomin A lipoglycoprotein complex present in the acrosome acrospire The sprout at the end of a seed when it begins to germinate. acrospiroma A tumor of the distal portion of a sweat gland. acrospore A fungal spore produced at the tip of a specialized hypha. acrosporous having acrospores across To, toward, or from the far side of (something that lies between two points of interest). acrosst across acrosswise In a way that goes across; crosswise. acrostatic In Proto-Indo-European athematic nominals, having a specific pattern of ablaut in which the accent is placed on the root syllable in all cases. acrostealgia An apophysitis of the bones of the extremities acrosternite The precostal lip of the sternum of a segment of an arthropod acrostic A poem or other text in which certain letters, often the first in each line, spell out a name or message. acrostical Like an acrostic. acrostically In the manner of an acrostic. acrostichaceous Belonging to the family Acrostichaceae. acrostichal Situated on the mesothorax of some dipteran flies acrostichic Being or relating to an acrostic. acrostichoid Whose sori densely cover the underside of the frond like a felt, without visible gaps between them. acrosticism Acrostic arrangement or character. acrostomy A morphotype characterized by bilateral symmetry and a mouth located at one pole of the body. acrosyndesis The pairing of homologous telomeres during meiosis acrosyringial Relating to the acrosyringium. acrosyringium An intraepidermal spiral duct in the eccrine gland. acrotarsial Relating to the acrotarsium acrotarsium The instep of the foot (front of the tarsus) acroteleutic The end of a verse or psalm, or something added to it, to be sung by the people by way of a response. acrotelm The top layer of a peat bog, above the catotelm, where there are living plants. acroter An acroterium. acrotergite The precostal sector of a tergite acroterial Pertaining to an acroterium. acroteric Relating to the extremities of the limbs or to the tip of the nose acroterium One of the small pedestals, for statues or other ornaments, placed on the apex and at the basal angles of a pediment, or upon the gables in Gothic architecture. acrothoracican Any barnacle of the superorder Acrothoracica acrotism A lack or defect of the pulse. acrotomophile A person with a paraphilic attraction to amputees (acrotomophilia). acrotomophilia A paraphilia involving sexual attraction toward amputees. acrotomophilic Of, pertaining to, or characterized by acrotomophilia. acrotonous Of an orchid: having the tissue of the pollen sac prolonged to the upper end of the anther. acrotrichial Relating to the acrotrichium acrotrichium The distal part of the infundibular epidermis that traverses the surface epidermis. acrotrophic Having nutritive cells at the top of the follicular tube acrotrophodynia A discomfort and functional impairment in the hands or feet due to an altered nerve and tissue damage, often linked to cold exposure. acroyl The univalent radical CH₂=CH-CO- derived from acrylic acid Acroyoga A physical practice that combines yoga and acrobatics. ACRR adjacent-channel rejection ratio; the resulting measurement of comparing signal strength with a similar signal on another frequency if they are on adjacent channels. acryl The univalent radical derived from acrylic acid :- CH₂=CH-CO- acrylaldehyde The unsaturated aldehyde acrolein acrylamidation reaction with an acrylamide acrylamide The amide of acrylic acid, CH₂=CH.CONH₂; used in the manufacture of polyacrylamides. acrylate Any salt or ester of acrylic acid. acrylated Modified by reaction with acrylic acid acrylation Any reaction involving the addition of an acrylate group acrylic Derived from acrylic acid or acrylonitrile. acrylodan The amine 6-acryloyl-2-dimethylaminonaphthalene acrylol The univalent radical CH₂=CH-CO- derived from acrylic acid acrylonitrile A toxic colourless liquid organic compound, CH₂=CH.CN, synthesized from propylene and ammonia; used as a monomer in the production of acrylic resins and synthetic rubber. acrylonitrilic Containing, or derived from acrylonitrile acryloxy The radical CH₂=CH-CO-O- derived from acrylic acid acryloyl The univalent radical CH₂=CH-CO- derived from acrylic acid; 2-propenoyl acryloyldimethyltaurate The acryloyl ester of the N-dimethyl derivative of taurine; it is used in some cosmetics acrylyl The univalent radical CH₂=CHCO− derived from acrylic acid acrystalliferous Not crystalliferous act An instance of a certain standardized college admissions test in the United States, originally called the American College Test. actability The condition of being actable actable Able to be acted, as by an actor. Actaeon A cuckold. actaeonid Any sea slug of the family Actaeonidae. actagardine A particular lantibiotic, structurally related to mersacidin. actant That which acts; a source of action or activity. actantial Relating to actants. actantially In terms of actants. actaplanin A complex of broad-spectrum antibiotics made by Actinoplanes bacteria. actarit An anti-inflammatory drug used to treat rheumatoid arthritis. actative Serving to act. actedron The drug amphetamine. acteme A unit of behavior. acteonellid Any gastropod in the family Acteonellidae. acteonid Any sea snail of the family Acteonidae. acteonoid Any member of the Acteonoidea superfamily of snails. acteoside A phenylethanoid glycoside present in Byblis liniflora acter A play or film with a particular number of acts. actibelt A belt that has an accelerometer built into the buckle. actidione Synonym of cycloheximide. actifan A person, particularly a fan of science fiction, involved in fanac or fan activity. actifier Synonym of reactivator. actify Synonym of activate. actigraph An accelerometer, worn by a sleeping subject, that records sleep activities. actigraphic Relating to actigraphy. actigraphically By means of actigraphy. actigraphy The use of the actigraph to record the movements of a sleeping subject, and analyze the subject's sleep patterns. actimeter A device that measures and records activity and rest. actimetric Relating to the measurement of activity actimetry The measurement of people's activity / rest cycles actimycin Synonym of azithromycin. actin A globular structural protein that polymerizes in a helical fashion to form an actin filament (or microfilament). actinal Pertaining to the side or surface around the mouth in an animal that has radial symmetry such as a starfish. actinally In an actinal manner. actinarian Any sea anemone of the order Actiniaria actinase A protease that hydrolyses actins actinate Any oxyanion of actinium, or salt containing such an oxyanion actinautographic That produces a developable impression on light-sensitive material without contact actinautography The production of an actinautographic image actinenchyma Cellular tissue formed in a star-shaped manner, as seen in a cross-section of Juncus. acting Temporarily assuming the duties or authority of another person when they are unable to do their job. actinia A sea anemone, specifically a member of the genus Actinia. actinian A sea anemone (of the order Actiniaria). actiniarian Any sea anemone of the order Actiniaria actinic Related to radiation; used most often in reference to light, especially in the ultraviolet range. actinically In an actinic manner. actinide Any of the 15 radioactive elements of the periodic table from actinium to lawrencium that are positioned under the lanthanides, to which they have similar chemistry. actinidiaceous Of or relating to the Actinidiaceae. actinidic Of or pertaining to the actinides. actinidin A protein-digesting enzyme present in kiwifruit. It is also an allergen. actinidine A pyridine derivative that is attractive to cats. actinidiolide A particular chemical compound that attracts cats: 4,4,7a-trimethyl-4,5-dihydrobenzofuran-2(7aH)-one. actiniferous Containing or producing actinium actiniform Having a radiated form; ray-shaped. actiniid Any sea anemone of the family Actiniidae actinin Any of several microfilament proteins that have a function in the attachment of actin fibres in muscle cells actiniochrome A red to violet pigment present in some Actinozoa actinioerythrin A particular carotenoid. actiniohematin A pigment (mixture of cytochromes) present in the sea anemone Actinia equina. actinioidean Any sea anemone of the superfamily Actinioidea actiniscidian Any dinoflagellate of the family Actiniscaceae. actinism That property of electromagnetic radiation that leads to the production of photochemical effects actinistian Relating to coelacanths (and related fish) of the class Actinistia. actinium A radioactive, metallic chemical element (symbol: Ac) with an atomic number of 89; found in uranium ores. actinobacillary Relating to actinobacilli actinobacillosis A zoonotic disease, most commonly associated with animals, caused by the Actinobacillus bacteria, and which forms radiating structures in the tissues actinobacillotic Relating to, or causing actinobacillosis actinobacillus Any bacterium of the genus Actinobacillus. actinobacterial Of, pertaining to, or derived from a member of the Actinobacteria. actinobacteriophage The bacteriophage of an actinobacterium actinobacterium Any member of the phylum or class Actinobacteria of bacteria. actinobiology The study of the effects of radiation upon living organisms.