From Longman Dictionary of Contemporary Englishprepositionprep‧o‧si‧tion /ˌprepəˈzɪʃən/ ●●● noun [countable] SLGa word that is used before a noun, pronoun, or gerund to show place, time, direction etc. In the phrase ‘the trees in the park’, ‘in’ is a preposition. —prepositional adjective
Examples from the Corpus
preposition• Nobody in the class knew that the word in was a preposition.• Other two-syllable words such as adverbs and prepositions seem to behave like verbs and adjectives.• Nope, you cut every extra article and preposition.• Many conjunctions functions as other parts of speech, chiefly as prepositions, such as before, till, since.• Another section is devoted entirely to grammar drills, including the use of prepositions, comparatives, negatives and verb tenses.• Function words are those which give structure to a sentence, such as articles, pronouns, prepositions, etc.• The nail is an indirect object because it is related to the verb through the preposition - on.• The class wrote and identified sentences using prepositions.Origin preposition (1300-1400) Latin praepositio, from praeponere “to put in front” 