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Definitions

dinosaur

[dahy-nuh-sawr] / ˈdaɪ nəˌsɔr /
ADJECTIVE
obsolete
Synonyms
STRONGEST
antiquated archaic out-of-date outmoded
WEAK
anachronistic ancient antediluvian antique bygone dated dead dead and gone discarded disused done for dusty extinct fossil gone had it has-been horse and buggy kaput moldy moth-eaten old old-fashioned old-hat old-school out out-of-fashion outworn passé stale superannuated superseded timeworn unfashionable
Antonyms
STRONGEST
current modern new
WEAK
contemporary in vogue present up-to-date
ADJECTIVE
outmoded
Synonyms
STRONGEST
antiquated archaic obsolete out-of-date
STRONG
antique bent dated fossilized out outworn superannuated superseded tired
WEAK
anachronistic antediluvian behind the times bygone dead disused démodé extinct has-been horse and buggy moldy moth-eaten musty obsolescent old-hat old-time olden out of style passé unfashionable unstylish unusable vintage
Antonyms
STRONGEST
current modern new present
STRONG
fresh
WEAK
newfangled popular up-to-date

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

This work may also provide a basis for comparison with other dinosaur species and with modern animals such as birds, which are closely related to dinosaurs.

From Science Daily • Apr. 26, 2026

Identifying the exact type of dinosaur from footprints alone can be difficult.

From Science Daily • Apr. 24, 2026

Future systematic searches of these areas could reveal additional dinosaur bones, more tracks, and possibly traces of other ancient animals.

From Science Daily • Apr. 24, 2026

A long-standing puzzle involving dozens of unusually small dinosaur fossils has finally been resolved.

From Science Daily • Apr. 21, 2026

At the time the conventional wisdom about the dinosaur extinction was the same as it had been in Charles Lyell’s day a century earlier–namely that the dinosaurs had died out over millions of years.

From "A Short History of Nearly Everything" by Bill Bryson

Vocabulary lists containing dinosaur

Tyrannosaurus Lex(icon)

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Paleontology: Dinosaurs - Introductory

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Paleontology: Dinosaurs - Middle School and High School

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