As nouns the difference between terms and halfwave
is that terms is while halfwave is (physics|mathematics) half (especially the positive half) of a sine wave.
terms
English
Noun
(head)
Statistics
*
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halfwave
English
Alternative forms
* half-wave
Noun
(
en noun)
(physics, mathematics) half (especially the positive half) of a sine wave
Usage notes
*Used attributively to describe devices that manipulate electromagnetic waves by removing the negative part.