Standard Lemma guide

isabnormal

noun · 1 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

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

Definition source: English Wiktionary via Wiktextract

Usage: obsolete

Topics: climatology, meteorology, natural-sciences

Examples

  • 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.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From is- + abnormal.