hypotheca

Noun

 * 1)  The lower or posterior half of the theca of a thecate protist such as a diatom or dinoflagellate

Translations

 * German: Hypotheka
 * Irish: hipithiach
 * Korean: 하각

Etymology
Borrowed from the, from the verb.

Noun

 * 1)  A pledge given as surety for a loan.