crepit- +
(Latin: to creak, to crackle)
crepitant
1. Having a crackling sound; crackling; rattling.
2. Denoting a fine bubbling noise produced by air entering fluid in lung tissue; heard in pneumonia and in certain other conditions.
crepitate
To make a crackling, popping, or grating sound; a crackle.
crepitation
1. A rattling or crackling sound like that made by rubbing hair between the fingers close to the ear.
2. The sensation felt on placing the hand over the seat of a fracture when the broken ends of the bone are moved, or over tissue in which gas gangrene is present.
3. The noise produced by rubbing bone or irregular cartilage surfaces together, as in arthritis.
crepitus
A clinical sign in medicine characterized by a peculiar crackling, crinkly, or grating feeling or sound under the skin, around the lungs, or in the joints.
Crepitus in soft tissues is often a result of gas, most often air, that has penetrated and infiltrated an area where it should not normally be, as for example the soft tissues beneath the skin (a condition called subcutaneous emphysema).
Crepitus in a joint can represent cartilage wear in the joint space.
The term crepitus is taken directly from the Latin crepitus meaning, "a crackling sound" or "rattle".
decrepit
1. Weakened, worn out, impaired, or broken down by old age, illness, or hard use.
2. In poor condition; especially, as a result of being old, overused, or not working efficiently.
3. Etymology: from Middle French decrepit, from Latin decrepitus, from de-, "down" + crepitus, from crepare, "to crack, to break".
decrepitate
1. To heat a substance; especially, a salt, until it crackles or stops crackling, or to be heated in this way.
2. To roast or to calcine (crystals or salts) until they emit a crackling sound or until the crackling stops.
3. To make a crackling sound when roasted.
decrepitation
The crackling or breaking up of certain crystals when they are heated.
decrepitness
The quality or condition of being decrepit (weakened or worn out from age or wear).
decrepitude
The quality or condition of being weakened, worn out, impaired, in poor working order, or broken down by old age, illness, or hard use.
subcrepitant
Nearly or faintly crepitant.
subcrepitation
A sound approaching crepitation (sharp sound of snapping noises) in character.