Dioptral is valid Scrabble Word

Is dioptral a scrabble word?
Official Scrabble Players Dictionary YES
Official Tournament and Club Word List YES
Collins Scrabble Words YES
Is dioptral valid Words with Friends?
Words with Friends YES

8 letters word
11 points in Scrabble
13 points in WWF

Definitions for DIOPTRAL in dictionary:

NOUN:

a unit of measure of the refractive power of a lens, having the dimension of the reciprocal of length and a unit equal to the reciprocal of one meter. Abbreviation: D
an instrument, invented by Hipparchus, to measure the apparent diameter of the sun or moon or to estimate the size or elevation of distant objects.

ADJECTIVE:

relating to a diopter, a measure of refractive power

Words related to DIOPTRAL

dioptre10

Find what other words can be done using letters: "dioptral"
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