millimetre

noun (a millimetre, millimetres); millimeter (US)

«millimetre» in the English dictionary: everyday — its meanings, how the lessons use it, and examples, each with its tree on Mova.

Everyday

A millimetre is a small unit of length; there are 10 millimetres in a centimetre and 1,000 in a metre. It is written mm. tree →

In the lessons

In maths and science pupils measure small lengths in millimetres with a ruler: the width of a fingernail, rainfall in a rain gauge. Converting units: mm to cm to m. Phrases: to the nearest millimetre, millimetres of rain.

Examples

A millimetre is about the thickness of a credit card. tree →
Measure the line to the nearest millimetre. tree →
10 millimetres make 1 centimetre. tree →
We had 25 millimetres of rain today. tree →
The ant is 6 mm long. tree →
35 mm = 3.5 cm. tree →
The gap was only a millimetre wide. tree →
A metre has 1,000 millimetres. tree →

Note

UK, Canada, Australia, NZ, Ireland spell "millimetre"; USA spells "millimeter". Symbol mm (no s, no full stop). "Milli-" means one thousandth. Maths: mm ÷ 10 = cm; mm ÷ 1,000 = m; cm × 10 = mm. Trap: do not mix up mm with ml (millilitre, for volume).

On Mova

Trees and pragmatics of «millimetre» in the school dictionary: every meaning and example parsed by Mova, with its dependency tree and frames.
«millimetre» in the school dictionary on Mova free.

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