planula

Fetched 2026-10-26 (cache).

Synonyms: placula, plantula

Antonyms: placula, plantula

Related words from Datamuse; suggestions, not definitions.

Noun

1. {{lb|en|biology}} In [[embryonic]] [[development]], a [[vesicle]] filled with [[fluid]], formed from the [[morula]] by the [[divergence]] of its [[cell]]s in such a manner as to give rise to a central space, around which the cells arrange themselves as an [[envelope]]; an embryonic form intermediate between the morula and [[gastrula]].
2. {{lb|en|zoology}} The [[larva]] of a [[hydrozoan]], which is free-swimming and covered in [[cilium|cilia]].

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.