isabnormal

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noun

A line connecting places on a map with equal deviation from the average temperature at that latitude.

“In January, the coldest part of Siberia lies within a −20°C isabnormal; it is 20°C colder than the average temperature along its latitude.”

Scrabble 14
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Meanings

nounisabnormal (plural isabnormals)

plural isabnormals · alternative isoabnormal

  1. obsoleteclimatologyA line connecting places on a map with equal deviation from the average temperature at that latitude.

    In January, the coldest part of Siberia lies within a −20°C isabnormal; it is 20°C colder than the average temperature along its latitude.

Origin

From is- + abnormal.

Full word history & related roots →
Cite this entry
APA

isabnormal. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/isabnormal

MLA

“isabnormal.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/isabnormal. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “isabnormal,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/isabnormal.

Source: isabnormal on Wiktionary, CC BY-SA 4.0.