ذَرٌّ

The young ones [or grubs] of ants: (M, A, Msb, K:) according to Th, (M, TA,) one hundred of them weigh one barley-corn: (M, K:) or, according to En-Neysábooree, [who perhaps held ذَرٌّ to signify ant's eggs,] seventy of them weigh a gnat's wing, and seventy gnat's wings weigh one grain: (MF:) or the smallest of ants: (S:) or small red ants: (TA:) or it signifies, (TA,) or signifies also, (A,) the motes that are seen in a ray of the sun that enters through an aperture: (A, * TA:) as though they were particles of a thing sprinkled: and in like manner ذَرَّاتُ الذَّهَبِ [minute particles of gold]: (A:) the singular, (S,) or [rather] n. un., (Msb, K,) is ذَرَّةٌ, (S, M, Msb, K,) [of which the plural is ذَرَّاتٌ.] [See an example, from the Qur'an, 10:62, voce مِثْقَالٌ.]