trajectory
UK: trəˈdʒɛkt(ə)ri | US: trəˈdʒɛktəri
n. the curved path of an object moving through space (e.g., a projectile or celestial body)
n. a planned or predicted course of development or progression
trajectory = tra<across> + ject<throw> + ory<noun suffix>
- tra (from Latin trans, meaning "across")
- ject (from Latin jacere, meaning "to throw")
- ory (Latin-derived suffix forming nouns indicating a place or function)
Etymology Origin:
The word "trajectory" originates from Latin trajectus (past participle of traicere, "to throw across"), combining trans- (across) and jacere (to throw). It entered English in the 17th century via scientific discourse, initially describing the arc of projectiles. Over time, it expanded metaphorically to describe developmental paths (e.g., careers or trends). The morphemes reflect the literal act of "throwing across" space or time.
The rocket’s trajectory was calculated to avoid orbital debris.
Her career trajectory shifted dramatically after the innovation.
The ball’s parabolic trajectory made it hard to catch.
Economists analyzed the trajectory of market growth.
The comet’s trajectory will bring it close to Earth next year.