Haversian a. : Pertaining to, or discovered by, Clopton Havers, an English physician of the seventeenth century.

Example:
What are the differences between the Haversian/Volkmann's canal?

Taxonomy
Haversian canals, bone, free encyclopedia, compact bone, Canals, bone cells, search, Unsourced, reading, unclear, lacks, precise citations, transverse section, series of tubes, narrow channels, long axis, nerve cells, dense bone.

Defination from the web:
Haversian canals (sometimes Canals of Havers, named after British physician Clopton Havers) are a series of tubes around narrow channels formed by lamellae. ... The Haversian canals surround blood vessels and nerve cells throughout the bone and communicate with osteocytes in lacunae ...