in·stroke 
(ĭnstrōk′)
(ĭnstrōk′)n.
An inward stroke, especially a piston stroke moving away from the crankshaft.
- preponderancy
- preponderant
- preponderantly
- preponderate
- preponderately
- preponderation
- preposition
- preposition
- pre-position
- prepositional
- prepositionally
- prepositional phrase
- prepositive
- prepositively
- prepossess
- prepossessing
- prepossessingly
- prepossession
- preposterous
- preposterously
- preposterousness
- prepotency
- prepotent
- prepotently
- preppie