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WORDNET DICTIONARY
CIDE DICTIONARY
OXFORD DICTIONARY
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WORDNET DICTIONARY
Noun megohm has 1 sense
- megohm(n = noun.quantity) - a unit of resistance equal to one million ohms; is a kind of resistance unit
has parts: ohm
CIDE DICTIONARY
megohm, n. [Mega- + ohm.].
One of the larger measures of electrical resistance, amounting to one million ohms. [1913 Webster]