Definition of "actino-" in English

prefix

1. (biology) ray, ray-shaped

   • e.g. actinolite, actinomycete

2. (biology) radial geometry, particular radial symmetry

   • e.g. actinogonidial, actinostele, actinomorphic

3. (physics) actinic radiation

   • e.g. actinometer, actinochemistry, actinotherapy