Becoming less thick, dense, or numerous

Third-person singular simple present indicative form of thin

plural of thin

plural of thinness

(simile, rare) Very thin, unhealthily thin.

A type of scissors used in hairdressing that has a serrated edge and which is used to reduce the bulk of a section of hair rather than the length.

very thin, as paper is; insubstantial.

Somewhat cylindrical and slender like a pencil; also, tall and thin.

(viscometry) whose viscosity decreases with increasing shear rate

Extremely thin, like a twig.