harden

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  • verb

Synonyms for harden

Synonyms for harden

to make or become physically hard

to make firmer in a particular conviction or habit

to make resistant to hardship, especially through continued exposure

Synonyms for harden

become hard or harder

make hard or harder

harden by reheating and cooling in oil

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make fit

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References in periodicals archive ?
PLANT sweet peas once they have been well hardened off.
SWEETCORN plants should be almost hardened off and ready to plant outside.
Seeds should be planted inside during March and April, then hardened off and sown outside in May and June.
Within a few weeks plants raised inside can be hardened off and moved outdoors in spring and pricked out to grow on.
Outdoor varieties will need to be hardened off in a cold frame before they are planted out after the frosts.
Any vegetables which were sown under cover in January or February can now be hardened off.
Those tot plants bought at great expense might not survive a night in the open unless they are first hardened off by being placed outside on warm days for at least a week before transplanting, while being tucked up safely for the night in a shed, greenhouse or cold frame.
Pot up rooted cuttings of chrysanthemums and plant out well rooted plants once they have been hardened off in a cold frame.
They should be hardened off before planting out at the end of spring, 30cm (12in) apart in rows 45cm (18in) apart.