epitheca

[植]上壳, [动]上壳, 外鞘(腔肠动物)

词形变化

epithecae 复数 epithecae

释义与例句

n.
  1. 1.

    The upper half of the theca of a thecate protist such as a diatom or dinoflagellate.

    生物 植物学

词源

Ancient Greek ἐπί (epí, “upon”) + θήκη (thḗkē, “case, box, receptacle”)

来源：wiktionary