prefix
or amph-
Etymology: Latin amphi- around, on both sides, from Greek amphi-, amph-, from amphi — more at ambi-
1. : around
amphis permous
2. : on both sides : of both kinds : both
amphi carpic
amphi vorous
3. usually amphi- , chemistry , usually italic : having substituents in positions 2 and 6 in two fused 6-membered rings (as in naphthalene)