Lexical Definition

‎ὑπάντησις‎ hypántēsis (hoop-an'-tay-sis) meeting ^G:N-F
from ‎ὑπαντάω‎

meeting.

• an encounter or concurrence (with ‎εἰς‎ for infinitive, in order to fall in with)

Abbott-Smith

† ὑπ-άντησις, -εως, ἡ (< ὑπαντάω), [in LXX: Jg 11:34, εἰς ὑ. (לִקְרָאת), etc. ;]
a going to meet: εἰς ὑ. (v. M, Pr., 14 n), Mt 8:34 25:1, Jo 12:13.†

Abbott-Smith References

Liddell-Scott-Jones

ὑπάντησις-ησις, εως, ἡ,

coming to meet, ἐξῆλθον εἰς ὑπάντησιςησιν αὐτῷ [NT+1st c.AD+]

__2 Astrology texts, encounter of a heavenly body, in ἄφεσις, [Refs 2nd c.AD+]
__II metaphorically, retort, answer, [Refs 2nd c.AD+]; πρός τι[Refs 2nd c.AD+]
__II.2 counter-treatment, [Refs 2nd c.AD+]

_{LSJ Scripture Refs: John.12.13}