hardened to

Example Sentences

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Ediacaran animals, which lived 635-538 million years ago, were ocean dwellers; their remains preserved as cast-like impressions on the seabed that later hardened to rock.

From Science Daily • Nov. 18, 2024

Many of the formations are Jurassic sand dunes that have been hardened to sandstone by time.

From Los Angeles Times • May 31, 2024

A Russian businessman, Ilias Sabirov, was charged with receiving the chips, which are hardened to resist radiation and extreme temperatures and are critical components in missiles and military satellites.

From Reuters • Feb. 16, 2023

I think it did in her younger days, but she's become hardened to it now.

From BBC • Oct. 14, 2022

And then, as the sun sank reluctantly behind the treetops, the haze hardened to a brilliant brownish- yellow.

From "Tuck Everlasting" by Natalie Babbit