from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Having six rays
- n. A six-rayed spicule, made of silica, that makes up the skeleton of some sponges
from The Century Dictionary and Cyclopedia
- Having six rays: same as hexactinal.
- Having the characters of or pertaining to a hexactine.
- n. In the nomenclature of the spicular elements of sponges, a six-rayed or triaxial form typically expressed as six arms at right angles to one another.
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