actino-, actin-, actini-, -actinal, actis- +

(Greek: ray [as of light] or like a ray in form; radiance, radiation; a radiating or tentacled structure)

actinobiology (s) (noun), actinobiologies (pl)
The study of the effects of radiation on living organisms.
actinoblast
The mother cell from which a spicule (small needle-like structure or part) is developed, as with Porifera (sea animals known as sponges).
actinocarpic
A reference to plants with flowers radially arranged.
actinocarpous
Plants with flowers and fruit radially arranged.
actinochemical (adjective)
A reference to the various effects produced by visible radiation.
actinochemistry
The branch of chemistry that deals with the various effects produced by visible radiation that is concerned with the reactions produced by actinic radiation.
actinocongestin, congestin
A highly poisonous material derived from the tentacles of sea anemones which produces extensive dilatation of the splanchnic (internal organs collectively) vessels and hemorrhage when injected into laboratory animals.
actinocutitis
Radio or radiation dermatitis (skin inflammation).
actinodermatitis (s) (noun), actinodermatitises, actinodermatitides
1. Inflammation of the skin as a result of exposure to sunlight or because of adverse reaction to radiation-skin therapy.
2. Dermatitis caused by exposure to some form of radiation; such as, sunlight, ultraviolet light, or X-rays.
actinodrome
A reference to a leaf which is palmately veined or radiating like a shape similar to that of a hand with the fingers extended.
actinodromous
Veined like a hand with the fingers extended.
actinogen
The production of radiation.
actinogenesis
The production of radiation.
actinogenic
Producing radiation.
actinogenics
The science of radiation.