isabnormal

noun

is·​abnormal

¦īs also ¦īz+

variants or isoabnormal

¦ī(ˌ)sō also -)zō+

: an imaginary line or a line on a chart that connects or marks places on the surface of the earth having equal differences in a given time from the normal temperature of these places or that indicates differences between the calculated and actual temperatures of the different parallels of latitude

Word History

Etymology

is- + abnormal, adjective

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