megatherm

[meg-uh-thurm]

noun

a plant requiring a constant high temperature and abundant moisture for growth.

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Origin of megatherm

First recorded in 1875–80; mega- + therm

Related formsmeg·a·ther·mic, meg·a·ther·mal, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018