Medical Terms Starting with "Trans-": Definitions & Examples
Prefix: trans- (Latin) = across, through, beyond, changing
| Term | Breakdown | Meaning |
|---|---|---|
| Transcatheter | trans- + catheter | Via catheter through skin (percutaneous) into vessel/heart (e.g., TAVR, TAVI, MitraClip) |
| Transcranial | trans- + cranial | Through the skull (e.g., transcranial Doppler, TMS, transcranial surgery) |
| Transdermal | trans- + dermal | Across/through skin (delivery: patches, gels; absorption) |
| Transduction | trans- + ducere (lead) | Signal conversion (sensory receptor: stimulus → neural signal); gene transfer via viral vector |
| Transesophageal (TEE) | trans- + esophageal | Through esophagus (echo probe for cardiac imaging) |
| Transferrin | transfer + -in | Iron-transport glycoprotein (β-globulin) |
| Transformation | trans- + formare | Change in form; malignant transformation; bacterial DNA uptake |
| Transfusion | trans- + fundere (pour) | Transfer of blood/products from donor to recipient |
| Transgenic | trans- + genic | Organism with foreign gene inserted (knock-in, CRISPR) |
| Transient Ischemic Attack (TIA) | trans- + ire (go) + -ent | Temporary (<24h, usually <1h) neurologic deficit from brief cerebral ischemia; no infarction |
Learning Tip
Recognizing trans- = "across/through" helps decode unfamiliar terms: transplant, transpyloric, transsphenoidal, transvenous, transcutaneous.
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