(n) period of employment
(n) open period
(n) solar revolution
(n) term in which an appeal may be filed
(n) sunspot cycle
(n) cell cycle
(n) expiry date
use-by date
date of expiry
(n) test (testing) period
(n,adj-no) trial period
(adj-na,n,adj-no) premature
(P)
(n) rotation period
(n) (comp) test period
experimental period
(n) (comp) cyclically
periodically
(n) perinatology
(n) period of time in which to recharge one's batteries
(n) preparatory phase
preparatory period
(n) (comp) initializer
(n) (comp) initialization section
(n) (comp) opening screen
(n) (comp) incunabulum
(n) (comp) initial failure
(n) initial symptom
(n) (comp) initial state
(n,vs) initialization
initialisation
(n,adj-no) initial stage
(n) initial investment
(n) (comp) early failure
(n) (time limit imposed by the) statute of limitations
(n) consume by
best before
(n) best if eaten by this date