¦tran(t)s, -raan-, -nzˌ adjective
Etymology: trans- + thoracic
1. : performed or made by way of the thoracic cavity
2. : crossing or having connections that cross the thoracic cavity
a transthoracic pacemaker
• trans·tho·rac·i·cal·ly -¦rasə̇k(ə)lē adverb