TO
quarto, to
(noun) the size of a book whose pages are made by folding a sheet of paper twice to form four leaves
Source: WordNet® 3.1
Etymology
Particle
to
A particle used for marking the following verb as an infinitive.
As above, with the verb implied.
(expressing purpose) In order to.
A particle used to create phrasal verbs.
Preposition
to
Indicating destination: In the direction of, and arriving at.
Used to indicate the target or recipient of an action.
Used to indicate result of action.
Used to indicate a resulting feeling or emotion.
Used after an adjective to indicate its application.
Denotes the end of a range.
(obsolete, ) As a.
(arithmetic) Used to indicate a ratio or comparison.
(arithmetic) Used to indicate that the preceding term is to be raised to the power of the following value; indicates exponentiation.
(time) Preceding.
Used to describe what something consists of or contains.
(Canada, Newfoundland, West Midlands (UK)) At.
Usage notes
In the sense of "as a", it is a fossil word (Standard English only), found usually only in set phrases like: "to take a woman to wife", "to have someone to friend", "to have something to birthright" etc.. In northern dialects, where it is rare, but still in common use, it is often used in combination with with.
Adverb
to (not comparable)
Toward a closed, touching or engaging position.
(nautical) Into the wind.
Misspelling of too.
Synonyms
• (toward a closed, touching or engaging position): closed, shut
Antonyms
• (toward a closed, touching or engaging position): open, ajar
Anagrams
• OT, ot-
Proper noun
TO
(informal) Abbreviation of Toronto.
Noun
TO (plural TOs)
(sports) Initialism of time-out.
Anagrams
• OT, ot-
Source: Wiktionary