English
subtrajectory
From sub- + trajectory.
Formed from sub- + trajectory
Proto-Indo-European *upó ‘up; from below’
Proto-Italic *supo ‘under’
Latin sub ‘under, beneath, below’
English sub-
Proto-Indo-European *(H)yeh₁- ‘to throw, impel’
Latin trāiectus ‘thrown over or across’
New Latin trāiectōria
English trajectory
Today it means
noun A subset of a trajectory
Sources
Sources: Wiktionary, “subtrajectory”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.
Etymograph / subtrajectory