2) Biology: ectal
3) Medicine: adventitious, adventive, extrinsic, topical
5) Bookish: extrinsical
6) Construction: ambient (о среде), out-of-door
7) Anatomy: distal, externus
8) Mathematics: outside outer, periphery
9) Insurance: Out board
10) Automobile industry: female, overhung
11) Metallurgy: extraneous
12) Scottish language: but
13) Perfume: dermatic, exogenous
14) Ecology: circumambient
16) Polymers: open-air
17) Cables: outdoor (об установке, прокладке)
18) Makarov: adventitous, circumambient (о воздухе), female (о ПВ), male (thread), outlying, surface
Универсальный русско-английский словарь. Академик.ру. 2011.