Lexical Definition

‎μηκύνω‎ mēkýnō (may-koo'-no) to grow ^G:V
from ‎μῆκος‎

grow up.

• to lengthen, i.e. (middle voice) to enlarge

Abbott-Smith

μηκύνω (< μῆκος), [in LXX: Is 44:14 (גּדל pi.), Ez 12:25, 28 (משׁךְ ni.)*;]
to lengthen, extend: of causing plants to grow, Is 44:14; pass. (mid., Swete, in l.), to grow: Mk 4:27.†

Abbott-Smith References

Liddell-Scott-Jones

μηκύνω-ω,

Doric dialect μᾱκ- [Refs 5th c.BC+]: future - ῠνῶ [Refs 5th c.BC+], Ionic dialect -ῠνέω [Refs 5th c.BC+]: aorist ἐμήκῡνα [Refs] —middle, see below [Refs]:—passive, perfect μεμήκυσμαι [Refs 1st c.BC+]:— lengthen, prolong, [Refs 5th c.BC+]; of Time, μ. χρόνον, βίον, [Refs 5th c.BC+]:—passive, νοσεύματα μηκυνθέντα [μηκύνωετο ὁ πόλεμος 5th c.BC: Thucydides Historicus 1.102. ">Refs 5th c.BC+]

__2 delay, put off, τέλος [Refs 5th c.BC+]
__3 μ. λόγον, λόγους, spin out a speech, speak at length, [μηκύνωω λόγον [prev. author] “OC” 1120; τὴν ἀπολογίαν 5th-6th c.BC: Isocrates Orator 11.44; λόγους μακροτέρους 5th c.BC: Thucydides Historicus 4.17: without λόγον">Refs 5th c.BC+], to be lengthy or tedious, [Refs 5th c.BC+]; μ. περί τινος enlarge upon.., [Refs 4th c.BC+], talk at length about, dwell upon.., [Refs 5th c.BC+]:—passive, to be expounded at length, αὖθις ταῦτα μηκυνθήσεται [Refs 4th c.BC+]; to be continually repeated, [Refs 1st c.BC+]; to be dwelt upon, [Refs 4th c.BC+]
__4 μ. βοήν raise a loud cry, [Refs 5th c.BC+]
__5 Grammars, lengthen a syllable, [Refs 1st c.BC+]:—passive, [Refs 1st c.BC+]; φωνῆεν μηκυνόμενον a vowel capable of being scanned long, as αιυ, [Refs 7th c.AD+]
__6 Arith., multiply by a fresh factor, [Refs]
__7 middle, ἐμακύναντο κολοσσόν reared a tall statue, [Refs]