ultradense

adjective
ul·​tra·​dense | \ ˌəl-trə-ˈden(t)s How to pronounce ultradense (audio) \

Definition of ultradense

: very compact or crowded : extremely or extraordinarily dense especially, chemistry : having an extremely high mass (see mass entry 2 sense 1c) per unit volume (see volume entry 1 sense 2) ultradense stars

First Known Use of ultradense

1908, in the meaning defined above

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The first known use of ultradense was in 1908

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