Standard Lemma guide

microgram

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

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • Received-Pronunciation: /ˈmaɪ.kɹəˌɡɹæm/
  • Received-Pronunciation: /ˈmaɪ.kɹəʊˌɡɹæm/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • Canada, General-American: /ˈmaɪ.kɹəˌɡɹæm/
  • Canada, General-American: [ˈmʌɪ̯.kɹəˌɡɹɛə̯m] Canadian raising
  • Canada, General-American: /ˈmaɪ.kɹoʊˌɡɹæm/
  • Canada, General-American: [ˈmʌɪ̯.kɹoʊˌɡɹɛə̯m] Canadian raising
  • Australian: /ˈmɑe.kɹəˌɡɹæm/
  • Australian: /ˈmɑe.kɹəʉˌɡɹæm/
  • CMU ARPABET: M AY1 K R OW0 G R AE2 M Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

An SI unit of mass equal to 10−6 grams. Symbol: μg A unit of mass equal to one millionth of a gram, or 0.000 001 grams.

Definition source: English Wiktionary via Wiktextract

Topics: metrology

Examples

  • Holonyms: milligram < gram < kilogram < megagram < gigagram
  • Meronyms: picogram < nanogram

Meaning relationships

Synonyms: mul:μg, mul:mcg, mul:microg, mul:ug, gamma

Antonyms: none provided

2

noun

Meaning 2

one millionth (1/1,000,000) gram

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: mcg

Antonyms: none provided

Broader terms: metric weight unit, weight unit

History

Etymology

Etymology tree Proto-Indo-European *mey-der.? Ancient Greek μῑκρός (mīkrós) Ancient Greek μῑκρο- (mīkro-)lbor. English micro- English gram English microgram From micro- + gram.

Across languages

Translations

22 source translations are retained for this English entry.

  • Bengali: মাইক্রোগ্রাম (maikrōgram) — μg
  • Catalan: microgram — μg
  • Chinese Mandarin: 微克 (wēikè) — μg
  • Czech: mikrogram — μg
  • Finnish: mikrogramma — μg
  • French: microgramme — μg
  • German: Mikrogramm — μg
  • Greek: μικρογραμμάριο (mikrogrammário) — μg
  • Icelandic: míkrógramm — μg
  • Italian: microgrammo — μg
  • Japanese: マイクログラム (maikurogramu) — μg
  • Korean: 마이크로그램 (maikeurogeuraem) — μg
  • Norwegian Bokmål: mikrogram — μg
  • Norwegian Nynorsk: mikrogram — μg
  • Polish: mikrogram — μg
  • Portuguese: micrograma — μg
  • Russian: микрогра́мм (mikrográmm) — μg
  • Spanish: microgramo — μg
  • Swedish: mikrogram — μg
  • Telugu: మైక్రోగ్రాము (maikrōgrāmu) — μg
  • Thai: ไมโครกรัม — μg
  • Vietnamese: micrôgam — μg