jounce

== English == === Etymology === The verb is derived from Late Middle English *jouncen (“to jolt violently”) (evidenced by jouncinge (“violent jolting movement”)); further etymology unknown, possibly imitative. The noun is probably derived from the verb as it is attested later. === Pronunciation === (Received Pronunciation, General American) IPA(key): /d͡ʒaʊn(t)s/ Rhymes: -aʊns === Verb === jounce (third-person singular simple present jounces, present participle jouncing, simple past and past participle jounced) (transitive) To shake (someone or something) up and down, for example, by driving a vehicle over obstructions or riding a horse roughly; to jolt. (intransitive) To move vigorously up and down; to bounce, to bump, to jolt; also, to fall and hit something heavily. Near-synonym: jostle ==== Derived terms ==== jouncing (noun) jouncingly rejounce (obsolete) ==== Translations ==== === Noun === jounce (plural jounces) A vigorous up-and-down movement; a jolt, a shake. Synonym: jouncing (physics) The fourth derivative of the position vector with respect to time; the time derivative of jerk. Synonym: snap Coordinate terms: crackle, pop ==== Derived terms ==== jouncy jounce bumper ==== Translations ==== === References === === Further reading === fourth, fifth, and sixth derivatives of position on Wikipedia.Wikipedia