1. A vein formed by the union of the 4th to 7th posterior intercostal veins; empties into the azygos vein
   - accessory hemiazygos vein, accessory hemiazygous vein

Type of: vein, vena, venous blood vessel

• Thibet
• thick
• thick skin
• thick-billed
• thick-billed murre
• thick-bodied
• thick-branched
• thick-footed morel
• thick-haired
• thick-knee
• thick-lipped
• thick-skinned
• thick-skulled
• thick-stemmed
• thick-witted
• thicken
• thickened
• thickener
• thickening
• thicket
• thicket-forming
• thickhead
• thickheaded
• thickly
• thickly settled