Princeton's WordNet

1. motivation, motive, need(noun)

   the psychological feature that arouses an organism to action toward a desired goal; the reason for the action; that which gives purpose and direction to behavior

   "we did not understand his motivation"; "he acted with the best of motives"

2. motivation(noun)

   the condition of being motivated

   "his motivation was at a high level"

3. motivation, motivating(noun)

   the act of motivating; providing incentive

Kernerman English Learner's Dictionary

1. motivation(noun)ˌmoʊ təˈveɪ ʃən

   enthusiasm for doing sth

   a lack of employee motivation

2. motivationˌmoʊ təˈveɪ ʃən

   a reason or purpose for doing sth

   What's your motivation for learning English?

Wiktionary

1. motivation(Noun)

   Willingness of action especially in behavior

2. motivation(Noun)

   The action of motivating.

3. motivation(Noun)

   Something which motivates.

4. motivation(Noun)

   An incentive or reason for doing something.

5. motivation(Noun)

   a research rating that measures how the rational and emotional elements of a commercial affect consumer intention to consider, visit, or buy something.

   The motivation scores showed that 65% of people wanted to visit our website to learn more about the offer after watching the commercial.

Origin: motive, from the verb moveo, + -ation

U.S. National Library of Medicine

1. Motivation

   Those factors which cause an organism to behave or act in either a goal-seeking or satisfying manner. They may be influenced by physiological drives or by external stimuli.

• motiveringAfrikaans
• إثارَه، تَشْويق، تَحْفيز، حَفْزArabic
• мотивацияBulgarian
• motivaçãoPortuguese (BR)
• motivaceCzech
• die MotivierungGerman
• motivationDanish
• κίνητρο, παρακίνησηGreek
• motivaciónSpanish
• motivatsioonEstonian
• محرکFarsi
• motivaatioFinnish
• motivationFrench
• מוֹטִיבַציָה, הֲנַעַהHebrew
• प्रेरणHindi
• motivacijaCroatian
• indok(lás), motivációHungarian
• motivasiIndonesian
• áhugi; ástæða, hvötIcelandic
• motivazioneItalian
• 動機づけJapanese
• 동기 부여Korean
• motyvacija, stimulasLithuanian
• motivācija; stimulsLatvian
• motivasiMalay
• motiveringDutch
• motivasjonNorwegian
• motywacjaPolish
• محرکPersian
• انګيزهPashto
• motivaçãoPortuguese
• motivaţieRomanian
• побуждениеRussian
• motiváciaSlovak
• motivacija; utemeljitevSlovenian
• motivacijaSerbian
• motivering, motivationSwedish
• แรงบันดาลใจThai
• motivasyon, güdülenmeTurkish
• 動機Chinese (Trad.)
• мотиваціяUkrainian
• ترغیبUrdu
• sự thúc đẩyVietnamese
• 动力，动机，诱因，促进因素Chinese (Simp.)