- a hardened or thickened part of the skin; a callosity.
- a new growth of osseous matter at the ends of a fractured bone, serving to unite them.
- the tissue that forms over the wounds of plants, protecting the inner tissues and causing healing.
- a deposit on the perforated area of a sieve tube.
- (in grasses) a tough swelling at the base of a lemma or palea.
Origin of callus
OTHER WORDS FROM callusun·cal·lused, adjective
WORDS THAT MAY BE CONFUSED WITH calluscallous, callus
How to use callus in a sentence
Then, while observing live cells in the callus, Hertle caught images of the chloroplasts in the act of migration.
About a decade ago, Bock and his team grafted together two species of tobacco plants and sequenced genes from both sides of the callus.
Hertle was determined to look at what was going on in the callus.
You can use a urea-based cream to soften calluses, and wear socks or even plastic wrap after moisturizing your feet at night to help it do its work.
Diabetics should not treat calluses themselves, Andersen and Pearl warned, and should be keeping up with their regular visits to their podiatrist to guard against foot ulcers.
His fingertips were callused, worked rough with exertion well beyond the normal call of duty.Down and Out in the Magic Kingdom|Cory Doctorow
It may even occur that the whole inner bark around the trunk is of a callused nature, without any open cankers showing at all.
In this manner, cuttings which have been obtained in winter or spring can be callused before planting time.The Nursery Book|Liberty Hyde Bailey
This year we tried some black walnut grafts and found that they callused in 10 to 14 days when placed in a grafting case.
These callused rapidly and were planted immediately in the nursery.
British Dictionary definitions for callus
- a mass of hard protective tissue produced in woody plants at the site of an injury
- an accumulation of callose in the sieve tubes