# micrograms

/ˈmaɪkɹoʊˌɡɹæmz/ (US) · /mˈaɪkɹəʊɡɹˌæmz/ (UK) · CEFR C1 · Noun

Source: https://englishreference.com/word/micrograms
Updated: 2026-10-18

## Definition

a very tiny unit of weight, equal to one millionth of a gram. You see it on medicine and vitamin labels for very small amounts.

For teachers: one-millionth of a gram (10^-6 g), used for measuring very small masses such as drug doses, vitamins, and trace chemicals.

## Examples

- The pill contains 25 micrograms of vitamin D.
- The label says each serving provides 150 micrograms of iodine for thyroid health.
- Laboratory scales calibrated to micrograms allow researchers to weigh trace compounds with precision unattainable on standard balances.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.