Dux vs. Lux — What's the Difference?

Dux (; plural: ducēs) is Latin for "leader" (from the noun dux, ducis, "leader, general") and later for duke and its variant forms (doge, duce, etc.). During the Roman Republic, dux could refer to anyone who commanded troops including foreign leaders, but was not a formal military rank.

The lux (symbol: lx) is the SI derived unit of illuminance, measuring luminous flux per unit area. It is equal to one lumen per square metre.

The top (male or female) academic student in a school, or in a year of school; the top student in a specified academic discipline.

The SI unit of illuminance, equal to one lumen per square metre.

(historical) A high-ranking commander in the Roman army, responsible for more than one legion.

The International System unit of illumination, equal to one lumen per square meter. See Table at measurement.

(music) The subject of a fugue, answered by the comes.

In the International System of Units, the derived unit of illuminance or illumination; one lumen per square metre. Symbol: lx

The scholastic name for the theme or subject of a fugue, the answer being called the comes, or companion.

To put out of joint; to luxate.

To put out of joint; to luxate.

A unit of illumination equal to 1 lumen per square meter; 0.0929 foot candle