| tracheal veins | Several small venous trunks from the trachea, emptying into the brachiocephalic veins or the superior vena cava. Synonym: venae tracheales. (05 Mar 2000) |
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| tracheal wall stripe | On a chest radiograph, the linear opacity between air in the trachea and in the right upper lobe. (05 Mar 2000) |
| trachealgia | Pain in the trachea. Origin: trachea + G. Algos, pain (05 Mar 2000) |
| trachealis | See: trachealis muscle. (05 Mar 2000) |
| trachealis muscle | <anatomy> The band of smooth muscular fibres in the fibrous membrane connecting posteriorly the ends of the tracheal rings. Synonym: musculus trachealis. (05 Mar 2000) |
| trachearia | <zoology> A division of Arachnida including those that breathe only by means of tracheae. It includes the mites, ticks, false scorpions, and harvestmen. Source: Websters Dictionary (01 Mar 1998) |
| tracheary | Tracheal; breathing by means of tracheae. <zoology> One of the Trachearia. Source: Websters Dictionary (01 Mar 1998) |
| tracheata | <zoology> An extensive division of arthropods comprising all those which breathe by tracheae, as distinguished from Crustacea, which breathe by means of branchiae. Source: Websters Dictionary (01 Mar 1998) |
| tracheate | <zoology> Breathing by means of tracheae; of or pertaining to the Tracheata. <zoology> Any arthropod having tracheae; one of the Tracheata. Source: Websters Dictionary (01 Mar 1998) |