Lewis Short
(verb) : ap-prŏpinquo (adp-, Baiter, Weissenb.; app-, Kayser), āvi, ātum, 1
* To come near, draw nigh to, to approach.
* Of place.
* With ad: ad summam aquam adpropinquare,Cic. Fin. 4, 23, 64: ad portam, Auct. B. Hisp. 3; so id. ib. 2 al.: ad juga montium adpropinquare,Liv. 40, 58.
* Of time: jamque hiems adpropinquabat,Caes. B. C. 3, 9: cum dies comitiorum adpropinquaret,Liv. 3, 34, 7; 5, 39, 8 al.: tempus,Suet. Dom. 14 al.: tuus adventus adpropinquat,Cic. Fam. 2, 6: rei maturitas,id. ad Q. Fr. 3, 8 al.
Charlton T. Lewis, Charles Short, A Latin Dictionary