An Etymological Dictionary of Astronomy and Astrophysics

Of, pertaining to, or consisting in theory.

Etymology (EN): From L.L. theoreticus “of or pertaining to theory,” from Gk. theoretikos “contemplative, pertaining to theory;” → theory.

Etymology (PE): Negarik, contraction of negaréik, from negaré→ theory + -ik, → -ic.