English

Adjective

hypothecal ‎(not comparable)

1. (microbiology, planktology) Of or pertaining to the hypotheca, the lower half of the shell of certain types of plankton
   • 1978, Harold Charles Bold & Michael James Wynne, Introduction to the Algae: Structure and Reproduction, ISBN 0134777867, page 441:

     Two of the four hypothecal plates are very much enlarged.

Antonyms

• epithecal

See also

• Words that resemble hypothecal closely, but have unrelated meanings, include hypothetical and hypothecary.