Webster’s Revised Unabridged Dictionary · 1913
Pia mater
Pi′a ma′ter (pī′ȧ mā′tẽr). [NL., fr. L. pia (fem. of pius tender, kind) + mater mother.] (Anat.) The delicate and highly vascular membrane immediately investing the brain and spinal cord.
Webster’s Revised Unabridged Dictionary · 1913
Pi′a ma′ter (pī′ȧ mā′tẽr). [NL., fr. L. pia (fem. of pius tender, kind) + mater mother.] (Anat.) The delicate and highly vascular membrane immediately investing the brain and spinal cord.