The Collaborative International Dictionary of English v.0.48:

Thymic \Thym"ic\, a. (Anat.)
   Of or pertaining to the thymus gland.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Thymic \Thy"mic\, a. (Med. Chem.)
   Pertaining to, or derived from, thyme; as, thymic acid.
   [1913 Webster]