vergence
/ˈvɜː(ɹ)dʒəns/
Word Rarity
Very rare
Frequency: Zipf frequency 1.62 in modern English
14
Scrabble Score
8
Letters
2
Syllables
6
Unique Chars
Meaning
Example Sentences
- "a special vertex trial case computed for an object vergence of 4.00."
- "1947 Benjamin King Johnson, Optics and Optical Instruments: An Introduction with Special Reference to Practical Applications, Courier Corporation (1960 [1947]), p. 152. "Ample movement between the source and condenser should be available in order to allow for a variation in the vergence of the light leaving the condenser""
Etymology
From verge (“tend, incline”, from Latin vergere) + -ence, synonym of earlier (1660s) vergency (the equivalent of French vergence). Coined as a technical term in ophthalmology, as a hypernym of convergence and divergence, in 1902. The sense of the numeric quantity in geometric optics was introduced, from use of the term in physiological optics, in the 1920s.