Meaning of -METER in English

-METER

I. -meter /miːtə, mɪtə $ -tər/ AmE suffix [in nouns]

[ Language: French ; Origin: -mètre , from Greek metron 'measure' ]

an instrument for measuring something:

a thermometer (=an instrument for measuring heat)

II. -metre BrE AmE British English , -meter American English /miːtə, mɪtə $ -tər/ suffix [in nouns]

part of a metre, or a number of metres:

a millimetre

a kilometer

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.