actino-, actin-, actini-, -actinal, actis- (Greek: ray [as of light], radiance, radiating or tentacled structure).actinal: 
The region from which the rays or tentacles grow on a radiate animal.
 
actiniform: 
Having a radial form; rayed.
 
actinobiology: 
The study of the effects of radiation on living organisms.
 
actinocutitis: 
Radio dermatitis (skin inflammation).
 
actinodermatitis: 
Inflammation of the skin as a result of exposure to sunlight or because of adverse reaction to radiation-skin therapy.
 
actinohematin: 
A red respiratory pigment found in certain forms of Actina (sea anemones).
 
actinology: 
1. The science of photochemistry or the science of the chemical effects of light.  
2. The study of radiant energy. actinometer: 
An instrument for measuring the intensity and penetrating power of actinic rays. Also actinometry.
 
actinomorphic: 
Having radial symmetry, as a flower or a starfish.
 
actinomorphy: 
Radial symmetry in flowers.
 
actinotherapy: 
The treatment of a disease with ultraviolet or actinic rays.
 
actinotoxin: 
A crude poison derived from alcoholic extracts of the tentacles of sea anemones.
 
actinozoan: 
Saltwater animals, such as corals, sea anemones, sea fans, etc.
 
actine: 
actinenchyma: 
actinian: 
actinic: 
actinide: 
actinism: 
actinium: 
actinobacillosis: 
actinobiology: 
actinoblast: 
actinobolism: 
actinocarpic: 
actinocarpous: 
actinochemistry: 
actinocongestion: 
actinodrome: 
actinodromous: 
actinogen: 
actinogenesis: 
actinogonidial: 
actinogram: 
actinograph: 
actinography: 
actinoid: 
actinolite: 
actinolitic: 
actinomere: 
actinometric: 
actinometry: 
actinomorphous: 
actinomorphy: 
actinomyces: 
actinomycete: 
actinomycin: 
actinomycosis: 
actinomycotic: 
actinoneuritis: 
actinophage: 
actinophagia: 
actinophagic: 
actinopharynx: 
actinophone: 
actinophonic: 
actinophorous: 
actinopterygian: 
Actinopterygii: 
actinorrhiza: 
actinoscopy: 
actinospore: 
actinostome: 
actinotherapeutics: 
actinotoxemia: 
actinotrichia: 
Actinozoa: 
actinozoal: 
actinozol: 
actinula: 
adiactinic: 
hexactine: 
stauractine: 
tetractine: 
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