diactineadj.n.
/dʌɪˈaktɪn/ Zoology.
Of a monaxon sponge spicule: having two rays, growing in both directions. Also as n., a spicule of this type.
ΚΠ
1888 W. J. Sollas in Rep. Sci. Results Voy. H.M.S. Challenger: Zool. XXV. p. liii Diactine (diactina).—A monaxon in which growth proceeds in both directions along the axis.
1940 L. H. Hyman Invertebrates I. vi. 297 Monaxons that develop by growth in both directions from a central point are named diactinal monaxons, diactines, or, briefly, rhabds.
Derivatives
diˈactinal adj.
ΚΠ
1900 E. A. Minchin in E. R. Lankester Treat. Zool. II. 116 A simple monaxon rod, which may be either diactinal (rhabdus), or monactinal (style).
This entry has not yet been fully updated (first published 1933; most recently modified version published online June 2018).
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adj.n.1888- subproblem
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