an instrument for measuring the rate of flow of a liquid, consisting of a tapered vertical tube in which a small float is forced upward until its weight balances the fluid force.
Origin: partial trans. of G Rotamesser (1911), equiv. to Rota(tion) rotation+ Messer measurer, meter
Main Entry: ro·ta·me·ter Pronunciation: 'rOt-&-"mEt-&r, rO-'tam-&t- Function: noun : a gauge that consists of a graduatedglass tube containing a free float for measuring the flow of a liquid or gas
[roh-tam-i-ter, roh-tuh-mee-] 
