| lepto- | Light, thin, frail. Origin: G. Leptos, slender, delicate, weak (05 Mar 2000) |
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| leptocardia | <zoology> The lowest class of Vertebrata, including only the Amphioxus. The heart is represented only by a simple pulsating vessel. The blood is colourless; the brain, renal organs, and limbs are wanting, and the backbone is represented only by a simple, unsegmented notochord. See Amphioxus. Alternative forms: Leptocardii. Origin: NL, fr. Gr. Small + the heart. Source: Websters Dictionary (01 Mar 1998) |
| leptocardian | <zoology> Of or pertaining to the Leptocardia. One of the Leptocardia. Source: Websters Dictionary (01 Mar 1998) |
| leptocephalous | Having an abnormally tall, narrow cranium. Origin: Lepto-+ G. Kephale, head (05 Mar 2000) |
| leptocephaly | A malformation characterised by an abnormally tall, narrow cranium. Origin: Lepto-+ G. Kephale, head (05 Mar 2000) |
| leptochroa | Abnormally delicate skin. Origin: Lepto-+ G. Chroa, skin (05 Mar 2000) |
| leptochromatic | Having a very fine chromatin network. (05 Mar 2000) |
| leptocyte | A target or Mexican hat cell, i.e., an unusually thin or flattened red blood cell in which there is a central rounded area of pigmented material, a middle clear zone that contains no pigment, and an outer pigmented rim at the edge of the cell. Leptocytes are thought to be erythrocytes in which the cellular envelope or membrane is unusually large in proportion to its contents. Origin: Lepto-+ G. Kytos, cell (05 Mar 2000) |
| leptocytosis | The presence of leptocytes in the circulating blood, as in thalassaemia, some instances of jaundice (even in the absence of anaemia), occasional examples of hepatic disease (in the absence of jaundice), and some patients who have had the spleen removed. (05 Mar 2000) |
| leptodactyl | <zoology> A bird or other animal having slender toes. Alternative forms: lepodactyle. Origin: Gr. Small, thin + finger, toe. Source: Websters Dictionary (01 Mar 1998) |
| leptodactylous | Having slender fingers. Origin: Lepto-+ G. Daktylos, finger (05 Mar 2000) |
| leptodermic | Thin-skinned. Origin: Lepto-+ G. Derma, skin (05 Mar 2000) |
| leptology | <study> A minute and tedious discourse on trifling things. Origin: Gr.; small, subtile + discourse. Source: Websters Dictionary (01 Mar 1998) |
| leptomeningeal | Pertaining to the leptomeninges. (05 Mar 2000) |
| leptomeningeal carcinoma | <tumour> An infiltration of carcinoma cells in the arachnoid and subarachnoid space; may be primary or secondary. Synonym: leptomeningeal carcinoma, leptomeningeal carcinomatosis, meningeal carcinomatosis. (05 Mar 2000) |