From the prefix tetra-, appended by Ancient Greek ἕδρα (hédra, “seat”).
tetraeder n (singular definite tetraederet, plural indefinite tetraedre)
neuter gender |
singular | plural | ||
---|---|---|---|---|
indefinite | definite | indefinite | definite | |
nominative | tetraeder | tetraederet | tetraedre | tetraedrene |
genitive | tetraeders | tetraederets | tetraedres | tetraedrenes |
tetraeder n (definite singular tetraederet or tetraedret, indefinite plural tetraeder or tetraedre, definite plural tetraedra or tetraedrene)
tetraeder n (definite singular tetraederet, indefinite plural tetraeder, definite plural tetraedera)
tetraeder c
nominative | genitive | ||
---|---|---|---|
singular | indefinite | tetraeder | tetraeders |
definite | tetraedern | tetraederns | |
plural | indefinite | tetraedrar | tetraedrars |
definite | tetraedrarna | tetraedrarnas |