injection (n.)
- antitoxin
- apogee
- aside
- bag
- bang
- booster
- brewing
- burn
- capsule
- deck
- docking
- dose
- draft
- drenching
- dropping
- ducking
- encroachment
- entrance
- entrenchment
- episode
- fix
- graft
- grafting
- hit
- hypodermic
- impaction
- impingement
- implantation
- imposition
- impregnation
- incursion
- infiltration
- infix
- influx
- infringement
- infusion
- inoculation
- inroad
- insert
- insertion
- insinuation
- intercalation
- interference
- interjection
- interpolation
- interposition
- interruption
- intervention
- introduction
- intromission
- intrusion
- invasion
- irruption
- leaching
- maceration
- module
- orbit
- parenthesis
- penetration
- percolation
- perfusion
- perigee
- permeation
- popping
- portion
- potion
- reentry
- remark
- rocket
- saturation
- shot
- soak
- soakage
- soaking
- souse
- sousing
- spacecraft
- spaceship
- tessellation
- transplant
- transplantation
- trespass
- vaccination
- vaccine