From metron; to measure (i.e. Ascertain in size by a fixed standard); by implication, to admeasure (i.e. Allot by rule) -- figuratively, to estimate -- measure, mete.
see GREEK metron
1. to measure out or off, a. properly, any space or distance with a measurer's reed or rule: τόν ναόν, τήν αὐλήν, etc., Revelation 11:2; Revelation 21:15, 17; with τῷ καλάμῳ added, Revelation 21:16; ἐν αὐτῷ, i. e. τῷ καλάμῳ, Revelation 11:1.
b. metaphorically, to judge accoding to any rule or standard, to estimate: ἐν ᾧ μέτρῳ μετρεῖτε, by what standard ye measure (others) (but the instrumental ἐν seems to point to a measure of capacity; cf. Winers Grammar, 388 (363); Buttmann, § 133, 19. On the proverb see further below), Matthew 7:2; Mark 4:24; passive to be judged, estimated, ibid.; μέτρειν ἑαυτόν ἐν ἑαυτῷ, to measure oneself by oneself, to derive from oneself the standard by which one estimates oneself, 2 Corinthians 10:12 (cf. Winer's Grammar, § 31, 8 at the end).
2. to measure to, mete out to, i. e. to give by measure: in the proverb τῷ αὐτῷ μέτρῳ ᾧ μετρεῖτε (or (so L T Tr WH) ᾧ μέτρῳ μετρεῖτε), i. e., dropping the figure, 'in proportion to your own beneficence,' Luke 6:38. (Compare: ἀντιμετρέω.)