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The Collaborative International Dictionary
Infrigidate

Infrigidate \In*frig"i*date\, v. t. [L. infrigidatus, p. p. of infrigidare to chill. See 1st In-, and Frigid.] To chill; to make cold; to cool. [Obs.]
--Boyle.

Wiktionary
infrigidate

vb. (context obsolete English) To chill; to make cold.