| Vocable | Translation |
| bilongus/bilonga/bilongum, AO Adjective | doubly long, [~ pes => consisting of two long syl… |
| bilustris/bilustre, bilustris M Adjective | lasting two lustres, lasting 10 years |
| bilychnis/bilychne, bilychnis M Adjective | having two lights/wicks |
| bimammiis/bimammie, bimammis M Adjective | having two breasts, double bosomed |
| bimaris/bimare, bimaris M Adjective | situated between two seas, of/connected with two … |
| bimater, bimatris M Adjective | having two mothers, twice born (of Bacchus) |
| bimatris/bimatre, bimatris M Adjective | having two mothers, twice born (of Bacchus) |
| bimatus/bimata/bimatum, AO Adjective | two years old |
| bimembris/bimembre, bimembris M Adjective | having limbs of two kinds, part man part beast |
| bimenstris/bimenstre, bimenstris M Adjective | two months old, of/for/lasting two months |
| bimenstruus/bimenstrua/bimenstruum, AO Adjective | two months old, of/for/lasting two months |
| bimestris/bimestre, bimestris M Adjective | two months old, of/lasting two months, occurring … |
| bimeter/bimetra/bimetrum, AO Adjective | consisting of two meters (poem, literary work) |
| bimotorius/bimotoria/bimotorium, AO Adjective | twin-motor |
| bimulus/bimula/bimulum, AO Adjective | two years old (only/a mere) |
| bimus/bima/bimum, AO Adjective | two years old, for/lasting two years |
| binarius/binaria/binarium, AO Adjective | consisting of/containing two, [~ formae => coins … |
| binominis/binomine, binominis M Adjective | having two names |
| binus/bina/binum, AO Adjective | two by two, 2 each, in pairs, 2 at time, on 2 occ… |
| biographicus/biographica/biographicum, AO Adjective | biographic |
| biologicus/biologica/biologicum, AO Adjective | biological |
| biometricus/biometrica/biometricum, AO Adjective | biometric |
| biothanatus/biothanata/biothanatum, AO Adjective | dying by violence, that dies a violent death |
| bioticus/biotica/bioticum, AO Adjective | of/belonging to/associated with/used in common li… |
| bipalmis/bipalme, bipalmis M Adjective | two palms/spans (long/broad - 6 inches, Roman foo… |
| bipalmus/bipalma/bipalmum, AO Adjective | two palms/spans (long/broad - 6 inches, Roman foo… |
| bipartitus/bipartita/bipartitum, AO Adjective | bipartite, that is divided in two parts, double (… |
| bipatens, bipatentis M Adjective | opening two ways, open in two directions, having … |
| bipedalis/bipedale, bipedalis M Adjective | two feet long, wide or thick, measuring two feet |
| bipedaneus/bipedanea/bipedaneum, AO Adjective | two feet long, wide or thick, measuring two feet |