☞ -act, -actine
-actine
\| ̷ ̷(ˌ) ̷ ̷\  adjective combining form 
Etymology: Greek aktin-, aktis 
 : having (such or so many) rays 
< discoactine >
< pentactine >
— especially in terms applied to sponge spicules
< discoactine >
< pentactine >
— especially in terms applied to sponge spicules