IshGen 38:8 :ܒܚܝܠܐ ܢܬܘܦܐ ܕܚܡܝܡܘܬܐ ܡܟܢܫ ܪܛܝܒܘܬܐ ܡܬܚܦܝܐ ܡ݂ܢ ܐܪܥܐ‏ : it collects hidden moisture from the air through the attractive power of heat
See the entire entry for nāṯōp̄, nāṯōp̄ā nom.ag. attracting