Hardening from cold can be defined by the word callous.
The word that describes hardening due to cold is "freezing".
No. The word "harden" is a verb.
The meaning of hardening due to cold is to "freeze".
something needs to harden
leaving it out in the cold or puting it in a freezer
No. Nipples will harden as a reflex when they are stimulated or cold.
to harden, to hold out
To 'harden', 'rigidify' or 'solidify'
set, solidify, stiffen, :)
The verb form of the word hard is harden.
"Cold" or "hot" are only defined when there are particles that move, so a temperature would not be defined for a perfect vacuum.
Heat the metal red hot. To harden the metal, cool it quickly by dunking it into cold water. To get a soft metal, let it cool slowly.