stridu-, strid- +

A spasmodic closure of the glottis, causing noisy inspiration.

Infectious inflammation of the larynx in children, accompanied by night attacks of spasmodic closure of the glottis, causing inspiratory stridor (crowing sound during the inspiratory [inhalation or breathing in] phase of respiration due to pathology [disease] involving the epiglottis or larynx).

1. A harsh, loud, grating, or shrill tone of voice.
2. Loudly, strongly, or urgently expressed.
3. Making or having a harsh sound; grating; creaking; for example, strident insects; strident hinges.
4. Having a shrill, irritating quality, or character: "He had a strident tone in his writings."
5. In linguistics, characterized acoustically by noise of relatively high intensity; such as, sibilants, labiodental, and uvular fricatives, and most affricates.
6. Etymology: from about 1656, from French strident, from Latin stridentem, stridens and stridere "to utter an inarticulate sound, to grate, to screech"; possibly of imitative origin.

1. A harsh, shrill, grating, or creaking sound.
2. A harsh, high-pitched sound in inhalation or exhalation.

A reference to grasshoppers, cicadas, crickets, etc: to make a chirruping sound by rubbing certain body parts together.

1. To produce a shrill grating, chirping, or hissing sound by rubbing body parts together; as certain insects do.
2. The sounds made by crickets, cicadas, grasshoppers, and other summertime insects when they rub special body parts together to make their shrill sounds.

1. A shrill grating or chirping noise made by some insects by rubbing their body parts together.
2. A high-pitched squeaking or chirping sound made by a grasshopper, crickets, cicadas, etc.

1. Making a shrill, creaking sound.
2. Making a small harsh sound or a creaking.

Stridulous laryngitis, a form of croup, or laryngitis, in children, associated with dyspnoea, occurring usually at night, and marked by crowing or stridulous breathing.