English

Adjective

epithecal ‎(not comparable)

1. (microbiology, planktology) Of or pertaining to the epitheca, the upper half of the shell of certain types of plankton.
   • 1919, G.M. Ehlers, New Species of Tetracoralla in The American journal of science, Vol. XLVIII:

     The epithecal covering of the outer is annulated by low ridges and shallow grooves...Fine, close-set, concentric lines, probably representing lines of growth, are obscurely shown on a few of the better preserved portions of the epithecal surface.

Related terms

• epitheca
• hypotheca
• hypothecal

See also

• Frustule