Definition

1. Adjective:

   • Being ten more than fifty: The word "lx" can function as an adjective describing the quantity sixty (60).

2. Noun:

   • A unit of illumination: In physics and photometry, "lx" (short for lux) is the SI derived unit of illuminance, measuring luminous flux per unit area. One lux is equal to one lumen per square meter.
   • The cardinal number sixty: "lx" can represent the number 60, the product of ten and six.

Usage Examples

• Adjective:
  • The recipe requires lx grams of flour. (The recipe requires sixty grams of flour.)
• Noun (Unit):
  • A typical office requires about 500 lx of illumination. (A typical office requires about 500 lux of illumination.)
• Noun (Number):
  • The Roman numeral for lx is LX. (The Roman numeral for sixty is LX.)

Advanced Usage

• Scientific Context: The term "lx" is primarily used in technical fields like lighting design, photography, and physics to specify light levels.
  • The minimum illuminance for reading is 300 lx.
• Numeral Representation: In some contexts, especially historical or typographical, "lx" can be used to denote the number 60, often seen in Roman numeral style (where 'L'=50 and 'X'=10).

Variants and Related Words

• Lux (n): The full, standard spelling of the unit "lx".
  • Lux is the SI unit for illuminance.
• Sixty (adj, n): The common English word for the number 60.
  • She is sixty years old.

Synonyms

• Sixty: The cardinal number.
• Three score: An archaic term for sixty.

Notes on Usage

• Abbreviation: "lx" is almost exclusively an abbreviation or symbol. In everyday language, the words "sixty" or "lux" are used instead.
• Case Sensitivity: As a unit symbol, "lx" (for lux) is written in lowercase. When representing the number, it may be styled in uppercase ("LX") to mimic Roman numerals.
• Context is Key: The meaning is entirely dependent on context—whether it's a scientific document (unit of light) or a numeric notation (the number 60).

Adjective

1. being ten more than fifty

Noun

1. a unit of illumination equal to 1 lumen per square meter; 0.0929 foot candle
2. the cardinal number that is the product of ten and six