Micronewtons

Part of speech: noun

Definitions

1. A unit of force in the metric system equal to one millionth of a newton, used to measure very small forces
2. A very small unit of force, namely one millionth of a newton, often applied in precision measurement and physics
3. The metric measure of force equivalent to a millionth part of a newton, encountered in laboratory and engineering contexts

Etymology: "Micronewtons" is the plural of "micronewton", a unit of force equal to one millionth of a newton. The newton itself was named after Isaac Newton, whose laws of motion established the concept of force that the unit measures. The prefix micro- comes from Greek "mikros", meaning "small", and it is the standard SI prefix for a factor of one millionth. Because the word is built from a prefix and an existing unit name, it has no separate story of its own: the prefix and the unit each carry their meaning straight into the compound. The plural follows the regular English pattern of adding "-s" to the unit name.