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  • English Word Mesonotum Definition The dorsal portion of the mesothorax of insects.
  • English Word Mesophl/um Definition The middle bark of a tree; the green layer of bark, usually soon covered by the outer or corky layer, and obliterated.
  • English Word Mesophryon Definition See Glabella.
  • English Word Mesophyllum Definition The parenchyma of a leaf between the skin of the two surfaces.
  • English Word Mesoplast Definition The nucleus of a cell; mesoblast.
  • English Word Mesopodial Definition Of or pertaining to the mesopodialia or to the parts of the limbs to which they belong.
  • English Word Mesopodiale Definition One of the bones of either the carpus or tarsus.
  • English Word Mesopodialia Definition of Mesopodiale
  • English Word Mesopodium Definition The middle portion of the foot in the Gastropoda and Pteropoda.
  • English Word Mesopterygium Definition The middle one of the three principal basal cartilages in the fins of fishes.
  • English Word Mesorchium Definition The fold of peritoneum which attaches the testis to the dorsal wall of the body cavity or scrotal sac.
  • English Word Mesorectum Definition The fold of peritoneum, or mesentery, attached to the rectum.
  • English Word Mesorhine Definition Having the nose of medium width; between leptorhine and platyrhine.
  • English Word Mesosauria Definition Same as Mosasauria.
  • English Word Mesoscapula Definition A process from the middle of the scapula in some animals; the spine of the scapula.
  • English Word Mesoscapular Definition Of or pertaining to the mesoscapula.
  • English Word Mesoscutum Definition The scutum or dorsal plate of the middle thoracic segment of an insect. See Illust. of Butterfly.
  • English Word Mesoseme Definition Having a medium orbital index; having orbits neither broad nor narrow; between megaseme and microseme.
  • English Word Mesosiderite Definition See the Note under Meteorite.
  • English Word Mesosperm Definition A membrane of a seed. See Secundine.
  • English Word Mesostate Definition A product of metabolic action.
  • English Word Mesosternal Definition Of or pertaining to the mesosternum.
  • English Word Mesosternum Definition The middle portion, or body, of the sternum.
  • English Word Mesosternum Definition The ventral piece of the middle segment of the thorax in insects.
  • English Word Mesotartaric Definition Pertaining to, or designating, an acid called also inactive tartaric acid.
  • English Word Mesotheca Definition The middle layer of the gonophore in the Hydrozoa.
  • English Word Mesothelium Definition Epithelial mesoderm; a layer of cuboidal epithelium cells, formed from a portion of the mesoderm during the differetiation of the germ layers. It constitutes the boundary of the c/lum.
  • English Word Mesothoracic Definition Of or pertaining to the mesothorax.
  • English Word Mesothorax Definition The middle segment of the thorax in insects. See Illust. of Coleoptera.
  • English Word Mesotrochal Definition Having the middle of the body surrounded by bands of cilia; -- said of the larvae of certain marine annelids.