Standard Lemma guide

molality

noun · 2 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

the concentration of a substance in solution, expressed as the number of moles of solute per kilogram of solvent

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: chemistry, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

concentration measured by the number of moles of solute per kilogram of solvent

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: molal concentration

Antonyms: none provided

Broader terms: concentration

History

Etymology

Etymology tree English molal Proto-Indo-European *-teh2 Proto-Indo-European *-ts Proto-Indo-European *-teh2ts Latin -itāsder. Old French -itebor. Middle English -ite English -ity English molality From molal + -ity.

Across languages

Translations

8 source translations are retained for this English entry.

  • Afrikaans: molaliteit — concentration of a substance in solution
  • Dutch: molaliteit — concentration of a substance in solution
  • Finnish: molaalisuus — concentration of a substance in solution
  • Italian: molalità — concentration of a substance in solution
  • Polish: molalność — concentration of a substance in solution
  • Portuguese: molalidade — concentration of a substance in solution
  • Swedish: molalitet — concentration of a substance in solution
  • Tagalog: kamolhan — concentration of a substance in solution