136 Glossaby 



Len"ticula'ris. [L., fr. lens, a lentil.] Lenticular ; lentil-shaped, i. e., bi-convex. 



Leu'cocyte". [G., leukos, white -f- cyie.] A white cell. 



Leva' tor, lev"ato'res. [L. levare, to raise.] A muscle that raises an organ or part. 



Lig"amen'tum, -ta. [L.] A ligament; the connective tissue band uniting bones at 

 a joint. 



Lin'gual (lin'gwal). [L. lingua, the tongue.] Pertaining to the tongue. 



Li'nin. [L. linum, flax.] The non-staining fibrils of the nucleus. 



Lum'bar. [L. lumbus, the loin.] Pertaining to the loin. 



Lu'cidum. [L.] Clear, shining. 



Lymph (limf). [L. limpha, clear water.] The clear fluid which exudes from the 

 blood into the various tissues, and is drained back into the venous circulation 

 through the lymphatic ducts, or lymphatics. 



-lymph. A word-part signifying a fluid. 



Lu'men. [L., light, hence a window or opening.] The opening or cavity of a tubular 

 organ. 



Lu'teus. [L., golden yellow.] Yellowish. 



Mac'ula, -ae. [L., a spot.] 



Mam"milla'ris ; re; ria. [L. mammilla, a nipple.] Resembling a nipple. 



Mam'mary. [L. mamma, a breast.] Pertaining to the breast as an organ. 



Max'illary. [L. maxill'a, the jaw bone.] 



Ma'ter. [L., mother.] Applied to the membranes investing the brain and cord be- 

 cause supposed to nourish them. 



Me"dia'lis. [L., fr. medius, the middle.] Medial ; pertaining to the middle. 



Meibo'mian. Fr. Meibom, a German anatomist. 



Medul'la. [L., medius, the middle.] The inner part or " marrow " of any organ ; 

 the spinal cord, because enclosed in the spinal column. 



Med'ullary (med'you-lar-i ; improperly medul'lary). An adjective originally meaning, 

 pertaining to the core, or marrow ; now applied principally to the characteristic 

 sheath of a medullated fiber. 



Med'ullated (med'you-la"ted). Having a medulla, or having a medullary sheath. 

 This term was applied to certain nerve fibers either because the sheath of 

 Schwann has the axon as its core or medulla ; else because the medullary sub- 

 stance of the sheath resembles marrow. 



Meiss'ner. A German anatomist. 



Mes"enceph'alon. [G., mesos, middle ; enkephalos, brain.] The mid-brain. 



Mes'enchyme. [L. mesenchyma, fr. G. mesos, middle ; enkymos, an infusion.] A cer- 

 tain part of the mesoderm. 



Mesenchymal. 



Mes'entery. [G., fr. mesos, middle ; enteron, intestine.] A fold of the peritoneum 

 investing an intestine or other visceral organ, and connecting it with the ab- 

 dominal wall. 



Mes"enter'ic. 



Mes'oderm. [G. mesos, middle ; derma, skin.] The middle cell-layer. 



Met-, Met'a-. [G.] A word-part meaning (in biological terms) behind, beyond, or 

 after; or else indicating change or transformation. 



Metab'olism. [G. metabole, change, fr. meta -(- ballein, to throw.] Change of chem- 

 ical condition. 



Met"abol'ic. 



Met'aplasm. [Meta -f- plasm."] Beyond plasm ; that which is not living substance. 



