1) the day, used of the natural day, or the interval between sunrise and sunset, as distinguished from and contrasted with the night
1a) in the daytime
1b) metaphorically, "the day" is regarded as the time for abstaining from indulgence, vice, crime, because acts of the sort are perpetrated at night and in darkness
2) of the civil day, or the space of twenty four hours (thus including the night)
2a) Eastern usage of this term differs from our western usage. Any part of a day is counted as a whole day, hence the expression "three days and three nights" does not mean literally three whole days, but at least one whole day plus part of two other days.
3) of the last day of this present age, the day Christ will return from heaven, raise the dead, hold the final judgment, and perfect his kingdom
4) used of time in general, i.e. the days of his life.
Part of Speech: noun feminine
Citing in TDNT: 2:943, 309
Feminine (with G5610 implied) of a derivative of ἧμαι hêmai (to sit; akin to the base of G1476) meaning tame, that is, gentle; day, that is, (literally) the time space between dawn and dark, or the whole 24 hours (but several days were usually reckoned by the Jews as inclusive of the parts of both extremes); figuratively a period (always defined more or less clearly by the context): - age, + alway, (mid-) day (by day, [-ly]), + for ever, judgment, (day) time, while, years.
|(υἱοὶ τῆς ἡμέρας) God’s people||11.14|
|e court of justice||56.1|
|(ἡμέρα σφαγῆς) day of condemnation||56.33|
|(ἀφ᾽ ἡμερῶν ἀρχαίων) long ago||67.26|
|(δἰ ἡμερῶν) a few days later||67.59|
|(ἡμέρα ἐξ ἡμέρας) day after day||67.92|
|(ἡμέρας τεσσεράκοντα καὶ νύκτας τεσσεράκοντα) long time||67.93|
|(εἰς ἡμέραν αἰῶνος) forever||67.95|
|(προβαίνω ἐν ἡμέραις) be old||67.99|
|b daylight period||67.186|
These two sites give similar information, with the definition from several dictionaries and statistics on the use of the word.
Perseus Digital Library
University of Chicago's Logion lexicon
Thayer's dictionary plus other information.
From this site's dictionary (in Italian)
Click on the first column to search for that word as a form of the root ἡμέρα; click on the second column to search for that grammatical form of the root ἡμέρα; click on the third column to search for that word and grammatical form; click on the total to search for the root ἡμέρα.