One entry found for diatom.

Main Entry: di·a·tom
Pronunciation: d--täm
Function: noun
: any of a class of minute floating single-celled or colonial algae that are common in fresh and salt water and have a cell wall of silica that remains as a skeleton after death
- di·a·to·ma·ceous /d-t--m-shs/ adjective
[diatom illustration]

Pronunciation Symbols