noun
- this present day: Today is beautiful.
- this present time or age: the world of today.
adverb
- on this present day: I will do it today.
- at the present time; in these days: Today you seldom see horses.
adjective
- Informal. of the present era; up-to-date: the today look in clothing styles.
noun
- this day, as distinct from yesterday or tomorrow
- the present agechildren of today
adverb
- during or on this day
- nowadays
Old English todæge, to dæge “on (the) day,” from to “at, on” (see to) + dæge, dative of dæg “day” (see day). Generally written as two words until 16c., after which it usually was written to-day until early 20c.
Similar constructions exist in other Germanic languages (cf. Dutch van daag “from-day,” Danish and Swedish i dag “in day”). German heute is from Old High German hiutu, from Proto-Germanic *hiu tagu “on (this) day,” with first element from PIE pronomial stem *ki-, represented by Latin cis “on this side.”
see here today, gone tomorrow.