Dictionary entry

σημειόω

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament

σημειόω, -ῶ

(< σημεῖον), [in LXX: Ps 4:6 (נשׂא)*;]

to mark, note. Mid., to note for oneself: II Th 3:14 (freq. in π.; v. ICC, M, Th., in l.).†