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 actinobolism Radiation; emission or projection. actinobranch An organ, in some anthozoans, that functions as a gill actinoceratid Any of the extinct cephalopods in the family †Actinoceratidae. actinocerid Any extinct cephalopod of the order †Actinocerida actinoceroid Any member of the Actinoceroidea superfamily of cephalopods. actinochemical Relating to actinochemistry. actinochemistry The science of chemistry and actinism. actinocrinite A crinoid of the genus †Actinocrinites, present only as fossils. actinocyclid Any sea slug of the family Actinocyclidae actinodaphine A particular aporphine alkaloid. actinodaphnine An alkaloid isolated from various plants, including Actinodaphne hookeri, Cassytha filiformis and Litsea monopetala (syn. Litsea polyantha), and investigated for its medicinal properties. actinodermatitis actinic dermatitis actinodin Any of a group of proteins that are essential structural components of fin rays and fin folds of zebrafish. actinodontid Synonym of eryopid. actinodromous having palmate veins actinoelectric Synonym of photoconductive. actinoelectricity photoconductivity actinofibril One of the parallel actin filaments found in pterosaur wings. actinogonidial Having radiately arranged genital organs. actinogram The record produced by an actinograph actinogranuloma An actinic granuloma actinograph A recording actinometer. actinography measurement with an actinograph actinohivin A lectin, that counters HIV, isolated from an actinomycete of the genus Longispora actinoid actinide actinolepid Any of the extinct placoderms in the family Actinolepidae. actinoleukin A toxic antibiotic produced by streptomycete bacteria actinolichen A lichen-like association between an actinobacterium and a green alga. actinolite A mineral with monoclinic crystals of the chemical formula Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂, belonging to the amphibole group. actinolitic containing, or resembling, actinolite. actinological Relating to actinology; relating to the effect of light on chemicals. actinologist A student of actinology; one versed in the science of actinology. actinologous Relating to actinologues actinologue A part of an actinomere correspondent to another in a different actinomere. actinology The study of the effect of light on chemicals. actinome All the actins of an organism actinomere One of the radial segments making up the body of one of the Coelenterata or similar organism actinomeric Relating to actinomeres actinometer An instrument used to measure the heating power of electromagnetic radiation, especially that of solar radiation. actinometric Of or pertaining to actinometry actinometry the measurement of the heating power of electromagnetic radiation, especially that of solar radiation actinomorphic Having its petals arranged in a radially symmetric fashion. actinomorphically In an actinomorphic manner. actinomorphous Synonym of actinomorphic. actinomorphy The condition of being actinomorphic. actinomyces Any bacterium (species) of the genus Actinomyces. actinomycetal Of or relating to the Actinomycetales, an order of Actinobacteria. actinomycete Any of various filamentous or rod-shaped bacteria, of the order Actinomycetales, that resemble fungi. Some actinomycetes are pathogens and some are sources of antibiotics. actinomycetic Of or relating to actinomycetes. actinomycetoma A tumour produced by infection by bacteria of genus Actinomyces. actinomycetous Of or relating to actinomycetes. actinomycin Any of a class of toxic polypeptide antibiotics found in soil bacteria of genus Streptomyces. actinomycoma The granulomatous lesion characteristic of actinomycosis actinomycosis An infectious bacterial disease of cattle and swine, sometimes transmitted to humans, characterized by the formation of painful abscesses in the mouth, lungs, or gastrointestinal tract, caused by Actinomyces israelii, Actinomyces gerencseriae, and Propionibacterium propionicum. actinomycotic Of or pertaining to actinomycosis. actinomyosin Actomyosin. actinomyxidian Any parasitic protozoan of the order Actinomyxidia actinon Radon-219 (21986Rn; symbol An), an isotope of radon actinonin A peptidomimetic antibacterial antibiotic, 3-[[1-[(2-(hydroxymethyl)-1-pyrrolidinyl)carbonyl]-2-methylpropyl]carbamoyl]octanohydroxamic acid actinopathy An abnormality of actin in muscles. actinophage Any bacteriophage that infects bacteria of the order Actinomycetales. actinopharynx A tube which leads from the mouth to the coelenteron in sea anemones actinophone An apparatus for the production of sound by the action of the actinic, or ultraviolet, rays. actinophonic Relating to the production of sound by means of the actinic, or ultraviolet, rays. actinophore A cartilaginous spine that supports the fin rays of fish actinophorous Having straight projecting spines actinophryan Of or relating to the heliozoan genus Actinophrys. actinophryd A member of the genus Actinophrys of heliozoans. actinophryid Any heliozoan of the order Actinophryida actinophytosis Synonym of actinomycosis. actinopilin A seta of some mites of the superorder Acariformes actinopod Any member of the variously ranked group Actinopoda of protozoa. actinopodid Any mygalomorph spider of the family Actinopodidae actinoporin A type of actinotoxin that form pores in membranes that contain sphingomyelin actinopt actinopterygian actinopterian Any fish of the Actinopteri, variously treated as a clade, class, or sub- or infra-class. actinopterygian Any of the ray-finned fish of the taxonomic class Actinopterygii. actinopterygiian Of or pertaining to Actinopterygii, the bony finned fish. actinoptygian Any sea cucumber of the genus Actinopyga actinoquinol A topical antiinfective drug. actinorhiza A root nodule formed as a result of a symbiotic relationship between an actinomycete and fine plant roots. actinorhizal Able to form a symbiosis with nitrogen-fixing actinobacteria actinorhodin A benzoisochromanequinone antibiotic produced by Streptomyces coelicolor actinorhodopsin A rhodopsin found in the freshwater actinobacterium Rhodoluna lacicola actinoscopy Radiology; examination by means of an X-ray machine. actinosiphonate Having vertical lamellae on the siphuncle, hypothesized to be either outgrowths of the connecting ring, or the result of gerontic secretions. actinosome The body of various cnidarians and ctenophores, such as the starfish. actinospore An actinosporean. actinosporean A microscopic parasite of the class Myxosporea during the stage of its life cycle when it is inside its secondary host. actinosporin Any of a group of antibiotics present in marine sponges of the genus Actinokineospora actinost A bone at the base of a paired fin (of a fish) actinostele A type of protostele, in which the core of vascular tissue in the stem extends outward in lobes. actinostelic Of or possessing an actinostele. actinostolid Any sea anemone of the family Actinostolidae actinostomal Relating to the actinostome. actinostome The mouth or anterior opening of a various marine animals, such as the starfish. actinote Any butterflies of the genus Actinote of the subfamily Heliconiinae, endemic to South America. actinotherapeutic Relating to actinotherapy. actinotherapeutics actinotherapy actinotherapy The treatment of disease, especially skin disease, by exposure to ultraviolet light; radiotherapy. actinotoxin A toxin derived from extracts of the tentacles of sea anemones. actinotrich Any mite of the former superorder Actinotrichida (now Acariformes) actinotrichium Any of a group of hairlike fibres in the finfolds of fish larvae that develop into fin rays actinotrocha The larva of a phoronid. actinovirus Any virus of the genus Actinovirus actinozoal Of or pertaining to the obsolete class of animals, Actinozoa. actinozoan Synonym of actinozoon. actinozoon One of the Actinozoa. actinula A kind of larva of certain hydroids (Tubularia). actio The use of voice and gestures in oratory; the style of delivery of a speech. action The effort of performing or doing something. actionability The characteristic of being actionable. actionable Able to be acted on; able to be used as the basis for taking action. actionably In an actionable manner. actional Of, pertaining to, or depicting action, especially physical action. actionalism The theory of sociologist Alain Touraine that aims to replace sociology's focus from society to actors. Here, they emphasise the importance of individuals as agents of social systems, rather than passive observers. actionalist A proponent of actionalism. actionality The quality of being actional. actionary A shareholder in a joint-stock company. actioned Having a specified kind of action. actionee The recipient of an action item; the person assigned responsibility for a specific task or issue. actioner An action movie. actionfest A film, video game, or other such story that is full of action. actioning An instance of taking action. actionism An excessive emphasis on action, activity, or change in lieu of continuity, stability, and permanence. actionist One taking part in the actionism movement. actionize To bring a legal action against; to sue. actionless Lacking action; particularly with respect to entertainment, dull, boring. actionlessness Absence of action. actionlet A component of an action performed by a person, used in computerized gesture recognition systems. actionlike Resembling or characteristic of an action. actionness The property of being an action. ActionScript A script written in this language. actiony Full of, or related to, action. actious active; full of activity; full of energy. actisign Synonym of sinsign. actisomide A particular antiarrhythmic drug. Actistetes a Julianist sect which stood in opposition to the Ctistolatræ an believed that Jesus shouldn't be spoken of as a created being, which was a form of Docetism and anti-Nicenean. actitation Frequent action; specifically, the debating of lawsuits. Actium A promontory in Acarnania in Ancient Greece where Mark Antony and Cleopatra were defeated by Octavian in a naval battle in 31 B.C. activable Capable of being activated activant A substance or agent that activates a process. activase Any enzyme that activates a gene activatability The state of being activatable. activatable Capable of being activated. activate To encourage development or induce increased activity; to stimulate. activation Making active and effective; bringing into a state of activity. activational Of or pertaining to activation activationist A person who designs and implements recreational activities as therapy, especially for the disabled activationless Having an activation energy near 0