9-letter words starting with mas
- mastering — a person with the ability or power to use, control, or dispose of something: a master of six languages; to be master of one's fate.
- masterson — William Barclay ("Bat") 1853–1921, U.S. frontier law officer.
- mastheads — Plural form of masthead.
- masthouse — a place, usually in a dockyard, in which masts are stored
- masticate — Chew (food).
- mastigium — an extensible, lashlike, anal organ in certain caterpillars.
- mastigure — Any of the spiny-tailed lizards of the genus Uromastyx.
- mastocyte — Mast cell.
- mastodons — Plural form of mastodon.
- mastodont — Mastodon.
- mastoidal — Mastoid.
- mastology — Mammalogy.
- mastopexy — fixation of a pendulous breast.