very light rain, specifically consisting of droplets less than 0.5 mm in diameter
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.
atmospheric precipitation in the form of very fine drops with diameters of less than 0.5 mm. Drizzle usually falls from stratus and stratocumulus clouds. The drops fall so slowly that they seem to be suspended in the air. The intensity of precipitation produced by drizzle is low: 0.05–0.25 mm per hr.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
Very small, numerous, and uniformly dispersed water drops that may appear to float while following air currents; unlike fog droplets, drizzle falls to the ground; it usually falls from low stratus clouds and is frequently accompanied by low visibility and fog.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
Fairly uniform precipitation composed exclusively of drops of water with a diameter of less than 0.02 in (0.5 mm), very close to one another, barely reaching the ground, usually from stratus clouds or fog. Drizzle is represented on the weather charts by the symbol
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved