An Etymological Dictionary of Astronomy and Astrophysics

Of or relating to the → side; situated at, proceeding from, or directed to a side (Dictionary.com).

Etymology (EN): M.E., from O.Fr. latéral and directly from L. lateralis “belonging to the side,” from latus “the side, flank; lateral surface.”

Etymology (PE): Kenâri, relating to kenâr, → side.