plural of mass extinction event

(evolutionary theory, geology) One of five historical events in which the Earth experienced a loss of ∼75% of all species over a geological interval of less than 3 million years, the most recent being the Cretaceous–Paleogene extinction event 66 million years ago.

(naval) A modern version of the mast (naval disciplinary hearing) in which the commanding officer singles out a crewmember for formal praise.

The mash resulting from a previous fermentation used as a starter in a new fermentation

Obsolete form of masterpiece.

(publishing, printing) The copy that serves as the controlling (master) version among a set of copies (as, for example, the master proof to which edits from the authors' proofs are transferred, or an analogous master manuscript with transferred edits).

plural of master copy

A tantric massage mainly focusing on the male genitalia.

(Australia) The masked lapwing, Vanellus miles.

A market for goods produced on a large scale for a significant number of end consumers.