Noun:

ঘড়ির কাচ, বালিঘড়ির কাচ,

watch glass's Usage Examples:

A watch glass is a circular concave piece of glass used in chemistry as a surface to evaporate a liquid, to hold solids while being weighed, for heating.

A Syracuse dish or Syracuse watch glass is a shallow, circular, flat-bottomed dish of thick glass.

cover slip to measure melting point, or a graduated cylinder, or to a watch glass from a flask or beaker through scraping.

However, when in use, beakers may be covered by a watch glass to prevent contamination or loss of the contents, but allowing venting.

15 drops of plasma with five drops of embryo extract in a watch glass.

Place a watch glass on a pad of cotton wool in a petri dish; cotton wool is kept.

historically used by Victorian chemists, owing to their cheap availability, the chemist's modern "watch glass" is thicker, flatter and of a heat-resistant glass.

Synonyms:

take in; catch; view; witness; rubberneck; look; see; observe;

Antonyms:

unskillfulness; agitate; worry; dissuade; lose;