| mesophlum | <botany> The middle bark of a tree; the green layer of bark, usually soon covered by the outer or corky layer, and obliterated. Origin: NL, fr. Gr. Middle + bark. Source: Websters Dictionary (01 Mar 1998) |
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| mesophragma | Synonym: M line. Origin: meso-+ G. Phragma, a fence (05 Mar 2000) |
| mesophryon | <anatomy> See Glabella. Origin: NL, from Gr. Source: Websters Dictionary (01 Mar 1998) |
| mesophyll | <plant biology> Tissue found in the interior of leaves, made up of photosynthetic (parenchyma) cells, also called chlorenchyma cells. Consists of relatively large, highly vacuolated cells, with many chloroplasts. Includes palisade parenchyma and spongy mesophyll. (18 Nov 1997) |
| mesophyllum | <botany> The parenchyma of a leaf between the skin of the two surfaces. Origin: NL, fr. Gr. Middle + leaf. Source: Websters Dictionary (01 Mar 1998) |
| mesopic | Pertaining to illumination between the photopic and scotopic ranges. Origin: meso-+ G. Opsis, vision (05 Mar 2000) |
| mesopic perimetry | Exploration of the visual field in dim illumination. (05 Mar 2000) |
| mesoplast | <biology> The nucleus of a cell; mesoblast. Source: Websters Dictionary (01 Mar 1998) |
| mesopneumonium | The reflection of pleura surrounding the root of the lung (including the pulmonary ligament inferiorly) as parietal pleura becomes continuous with the visceral pleura of the lung. Synonym: mesentery of lung. (05 Mar 2000) |
| mesopodial | <anatomy> Of or pertaining to the mesopodialia or to the parts of the limbs to which they belong. Source: Websters Dictionary (01 Mar 1998) |
| mesopodiale | <anatomy> One of the bones of either the carpus or tarsus. Origin: NL, fr. Gr. Middle +, dim. Of, foot. (04 Mar 1998) |
| mesopodium | <zoology> The middle portion of the foot in the Gastropoda and Pteropoda. Origin: NL. See Mesopodiale. Source: Websters Dictionary (01 Mar 1998) |
| mesoporphyrins | Porphyrins with four methyl, two ethyl, and two propionic acid side chains attached to the pyrrole rings. (12 Dec 1998) |
| mesoprosopic | Having a face of moderate width, i.e., with a facial index of about 90. Origin: meso-+ G. Prosopon, face (05 Mar 2000) |
| mesopterygium | <anatomy> The middle one of the three principal basal cartilages in the fins of fishes. Mesopteryg"ial. Origin: NL, fr. Gr. Middle + a fin. Source: Websters Dictionary (01 Mar 1998) |