An Etymological Dictionary of Astronomy and Astrophysics

To raise to a higher degree; intensify; magnify (Dictionary.com).

Etymology (EN): M.E. enhauncen, from Anglo-Fr. enhauncer, from O.Fr. enhaucier “make higher, make greater; raise in esteem,” from V.L. *inaltiare, from L.L. inaltare “raise, exalt,” from altare “make high,” from altus “high.”

Etymology (PE): Bolandidan, from boland “high,” related to bâlâ “up, above, high, elevated, height,” borz, “height, magnitude,” → magnitude.