Matching Words
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Trace Element
- noun - an element that occurs at very small quantities in the body but is nonetheless important for many biological processes
Trace Program
- noun - a utility program that exhibits the sequence and results of executing the instructions in another program
Tracer Bullet
- noun - ammunition whose flight can be observed by a trail of smoke
Tracheal Vein
- noun - several small veins from the trachea
Tracheophonae
- - A group of passerine birds having the syrinx at the lower end of the trachea.
Tracheophytes
- noun - green plant having a vascular system: ferns, gymnosperms, angiosperms
Tracheotomies
- noun - a surgical operation that creates an opening into the trachea with a tube inserted to provide a passage for air; performed when the pharynx is obstructed by edema or cancer or other causes
Trachymedusae
- - A division of acalephs in which the development is direct from the eggs, without a hydroid stage. Some of the species are parasitic on other medusae.
Trachystomata
- - An order of tailed aquatic amphibians, including Siren and Pseudobranchus. They have anterior legs only, are eel-like in form, and have no teeth except a small patch on the palate. The external gills are persistent through life.