bronchoconstrictor

Etymology tree
Ancient Greek βρόγχος (brónkhos)der.
English broncho-
Proto-Indo-European *ḱe?
Proto-Indo-European *ḱóm
Proto-Italic *kom
Proto-Italic *kom-
New Latin cōn-
Proto-Indo-European *strengʰ-der.
Proto-Indo-European *streyg-der.
New Latin stringō
New Latin cōnstringō
Proto-Indo-European *-tōr
Proto-Italic *-tōr
New Latin -tor
New Latin cōnstrictorbor.
▲
Latin cōnstringō
Latin cōnstrictusbor.
English constrict
▲
Latin -tor
Latin -ātor
Old French -eorbor.
Middle English -our
▲
Latin -torlbor.
English -or
English constrictor
English bronchoconstrictor
From broncho- + constrictor.