[hahr-dn-ing] /ˈhɑr dn ɪŋ/
a material that another, as an alloy added to iron to make steel.
the process of becoming hard or rigid.
[hahr-dn] /ˈhɑr dn/
verb (used with object)
to make or harder:
to harden steel.
to make pitiless or unfeeling:
to harden one’s heart.
to make rigid or unyielding; stiffen:
The rigors of poverty hardened his personality.
to strengthen or confirm, especially with reference to character, intentions, feelings, etc.; reinforce.
to make hardy, robust, or capable of endurance; toughen.
Military. to reinforce the structure of (a military or strategic installation) to protect it from nuclear bombardment.
verb (used without object)
to become hard or harder.
to become pitiless or unfeeling.
to become rigid or unyielding; stiffen:
His personality hardened over the years.
to become confirmed or strengthened:
His resistance hardened.
to become inured or toughened:
The troops hardened under constant fire.
the act or process of becoming or making hard
a substance added to another substance or material to make it harder
to make or become hard or harder; freeze, stiffen, or set
to make or become more hardy, tough, or unfeeling
to make or become stronger or firmer: they hardened defences
to make or become more resolute or set: hardened in his resolve
a rough fabric made from hards
c.1200 (replacing Old English heardian) “to make (something) hard,” from hard + -en (1). Meaning “to become hard” is late 14c. Related: Hardened (figurative sense of “unfeeling” is from late 14c.); hardening.
- Hardening of arteries
hardening of arteries hard·en·ing of arteries (här’dn-ĭng) n. The condition of arteriosclerosis.
- Hardening of the arteries
noun 1. a nontechnical name for arteriosclerosis
- Harden off
verb 1. (adverb) to accustom (a cultivated plant) or (of such a plant) to become accustomed to outdoor conditions by repeated exposure
- Harden up
verb 1. (intransitive) (nautical) to tighten the sheets of a sailing vessel so as to prevent luffing