Definition:
προσ-καρτερέω, -ῶ (καρτερός, strong, stedfast) [in LXX: Num.13:21 (חָזַק hith.), Tob.5:8 א, Da Th Su 1:6 *;] to attend constantly, continue stedfastly, adhere to, wait on: with dative of person(s), Mrk.3:9, Act.8:13 10:7; with dative of thing(s), Act.1:14 2:42 6:4, Rom.12:12, Col.4:2; before ἐν, Act.2:46; εἰς, Rom.13:6. (AS)
Definition:
to be earnest towards, i.e. (to a thing) to persevere, be constantly diligent, or (in a place) to attend assiduously all the exercises, or (to a person) to adhere closely to (as a servitor); attend (give self) continually (upon), continue (in, instant in, with), wait on (continually); from
g4314 (πρός) and
g2594 (καρτερέω);