| 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) |
| leptomeningeal carcinomatosis | <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) |
| leptomeningeal cyst | <radiology> Growing skull fracture, trauma most likely to be , skull fracture with tear of dura, herniation of fluid-filled arachnoid tissue, cyst walled off by subarchnoid adhesions, XR: oval area of bony erosion with scalloped margins, may result in acquired encephalocele (12 Dec 1998) |
| leptomeningeal fibrosis | A fibrous reaction within the subarachnoid space; sometimes a sequel to infectious or chemical meningitis. See: adhesive arachnoiditis. (05 Mar 2000) |
| leptomeninges | The two delicate layers of the meninges, the arachnoid mater and pia mater (vs. The tough pachymeninx or dura mater), considered together; by this concept, the arachnoid and pia are two parts of a single layer, much like the parietal and visceral layers of a serous membrane or bursa; although separated by the subarachnoid space they are connected via the arachnoid trabeculae and become continuous where the nerves and filum terminale exit the subarachnoid space (the cerebrospinal fluid-filled space bounded by the leptomeninges). See: arachnoid, pia mater. Synonym: meninx tenuis, pia-arachnoid, piarachnoid. Origin: Lepto-+ G. Meninx, pl. Meninges, membrane (05 Mar 2000) |
| leptomeningitis | <medicine> Inflammation of the pia mater or of the arachnoid membrane. Origin: NL, fr. Gr. Small + meningitis. Source: Websters Dictionary (01 Mar 1998) |
| leptomere | A very minute particle of living matter; Asclepiades believed the body was composed of an aggregation of vast numbers of leptomere's. Origin: Lepto-+ G. Meros, part (05 Mar 2000) |
| leptomonad | 1. Common name for a member of the genus Leptomonas. See: promastigote. (05 Mar 2000) |
| Leptomonas | A genus of asexual, monogenetic, parasitic flagellates (family Trypanosomatidae) commonly found in the hindgut of insects. Origin: Lepto-+ G. Monas, unit (05 Mar 2000) |
| leptonema | <cell biology, genetics> Classical term for the first stage of prophase I of meiosis, during which the chromosomes condense and become visible. (18 Nov 1997) |
| leptophonia | Synonym: hypophonia. Origin: Lepto-+ G. Phone, sound, voice (05 Mar 2000) |
| leptophonic | Weak-voiced. (05 Mar 2000) |
| leptophos | <chemical> O-(4-bromo-2,5-dichlorophenyl)-o-methylphenyl phosphonothioate. An organothiophosphate insecticide. Pharmacological action: insecticide, organothiophosphate. Chemical name: Phosphonothioic acid, phenyl-, O-(4-bromo-2,5-dichlorophenyl) O-methyl ester (12 Dec 1998) |
| leptopodia | The condition of having slender feet. Origin: Lepto-+ G. Pous, foot (05 Mar 2000) |