situated in front of or before the mouth.
- pre·o·ral·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use preoral in a sentence
The cilia of the preoral and postoral bands are not clearly differentiated at this stage.
At the anterior end of the preoral lobe is a nervous thickening of the ectoderm called 226 the apical plate .
Prostomium: The region in front of the mouth; the preoral part of the head.The Sea-beach at Ebb-tide | Augusta Foote Arnold
To the right of this adoral zone is a single line of preoral cilia.Marine Protozoa from Woods Hole | Gary N. Calkins