verb (used without object), mat·ter·at·ed, mat·ter·at·ing. New England, Upstate New York, and Southern U.S..
to fester; suppurate.
- matter of record,
- matter wave,
- matter waves,
Origin of matterate
perhaps by folk etymology from maturate
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019