Medical Definition of pyramidal lobe
: a conical lobe of the thyroid gland that varies in shape and position but is often found on the cranial part of the isthmus joining the right and left lobes of the gland or on the adjacent part of either lobe and that may project upward to the hyoid bone
Seen and Heard
What made you want to look up pyramidal lobe? Please tell us where you read or heard it (including the quote, if possible).