“circumhorizontal”

We have one entry that includes the term circumhorizontal.

circumhorizontal arc

noun

: a colored halo of 90° extent or less that is red on the upper side, parallel to the horizon and 46° or a little more below the sun, and produced by the refraction of light across 90° angles at the undersides of ice crystals in suspension in the air


Challenging Standardized Test Words, Vol. 2

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