How many letters does the top answer for “situated under or below the orbit.” have?

The most common answer is suborbital (10 letters).

Crossword clue: situated under or below the orbit.

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

suborbital 10 letters web-def

situated on or below the floor of the eye socket

suborbitar 10 letters web-def

Situated under or below the orbit.

situated below the poles. 50% similar → subpolar