mast- meaning
EN- PrefixPREmast-
- Of or relating to the mastoid process.
- Relating to a breast or nipple.
- Of or relating to the mastoid process.
Definition of mast- in English Dictionary
- Part-of-Speech Hierarchy
- Morphemes
- Prefixes
- Prefixes
- Morphemes
- en mast-cell
Source: Wiktionary
Grammatically, this word "mast-" is a morpheme, more specifically, a prefixe.