1. The wormlike developmental stage or stages of an insect or helminth that are markedly different from the adult and undergo subsequent metamorphosis; a grub, maggot, or caterpillar. 2. The second stage in the life cycle of a tick; the stage which hatches from the egg and, following engorgement, molts into the nymph. 3. The young of fishes or amphibians which often differ in appearance from the adult. [L. a mask]
- filariform l. infective third-stage l. of the hookworm, Ascaris, and other nematodes with penetrating larvae or with larvae that migrate through the body to reach the intestine.
- rhabditiform l. early developmental larval stages (first and second) of soil-borne nematodes such as Necator, Ancylostoma, and Strongyloides, which precede the infectious third-stage filariform l..

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lar·va 'lär-və n, pl lar·vae -(.)vē, -.vī also larvas
1) the immature, wingless, and often wormlike feeding form that hatches from the egg of many insects, alters chiefly in size while passing through several molts, and is finally transformed into a pupa or chrysalis from which the adult emerges
2) the early form of an animal (as a frog) that at birth or hatching is fundamentally unlike its parent and must metamorphose before assuming the adult characters
lar·val -vəl adj

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n. (pl. larvae)
the preadult or immature stage hatching from the egg of some animal groups, e.g. insects and nematodes, which may be markedly different from the sexually mature adult and have a totally different way of life. For example, the larvae of some flies are parasites of animals and cause disease whereas the adults are free-living.
larval adj.

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lar·va (lahrґvə) gen. and pl. larґvae [L. “ghost”] an independent, motile, sometimes feeding, developmental stage in the life history of an animal. Cf. imago (def. 1) and pupa.

Medical dictionary. 2011.

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  • larvă — LÁRVĂ, larve, s.f. Stadiu în dezvoltarea individuală a unor animale la ieşirea din ou, deosebit prin formă şi mod de viaţă de stadiul adult. – Din fr. larve. Trimis de LauraGellner, 17.05.2004. Sursa: DEX 98  LÁRVĂ s. 1. (zool.) (pop.) plod.… …   Dicționar Român

  • LARVA — Ml GRANS, «блуждающая личинка», обозначение кожной б ни, характеризующейся появлением ползучего красноватого валика, передвигающегося по коже и дающего различные фигуры хода. Синонимами L. т. являются обозначения: creeping disease,… …   Большая медицинская энциклопедия

  • Larva — Album par Eivør Pálsdóttir Pays  Féroé, iles !Îles Féroé Sortie …   Wikipédia en Français

  • larva — [lär′və] n. pl. larvae [lär′vē΄] or larvas [L, ghost, specter, akin to lar, household spirit: see LARES] the early, free living, immature form of any animal that changes structurally when it becomes an adult, usually by a complex metamorphosis… …   English World dictionary

  • Larva — Lar va (l[aum]r v[.a]), n.; pl. L. {Larv[ae]} (l[aum]r v[ae]), E. {Larvas} (l[aum]r v[.a]z). [L. larva ghost, specter, mask.] 1. (Zo[ o]l.) Any young insect from the time that it hatches from the egg until it becomes a pupa, or chrysalis. During… …   The Collaborative International Dictionary of English

  • larva — s.f. [dal lat. larva fantasma, maschera ]. 1. (etnol.) [secondo alcune credenze, anima errabonda, e appena visibile, di un defunto] ▶◀ fantasma, lemure, ombra, spettro, spirito. 2. (fig.) a. [creazione della fantasia: questa che abbiamo è… …   Enciclopedia Italiana

  • larva — 1650s, a ghost, specter, from L. larva (pl. larvae), earlier larua ghost, also mask; applied in biological sense 1768 by Linnaeus because immature forms of insects mask the adult forms. On the double sense of the Latin word, Carlo Ginzburg, among …   Etymology dictionary

  • larva — sustantivo femenino 1. Fase del desarrollo de algunos animales en la que ya han abandonado el huevo y se nutren por sí mismos, pero no han alcanzado todavía la fase adulta: Los insectos, los anfibios y algunos peces pasan por etapas de larva …   Diccionario Salamanca de la Lengua Española

  • larva — (Del lat. larva, fantasma). 1. f. Zool. Animal en estado de desarrollo, cuando ha abandonado las cubiertas del huevo y es capaz de nutrirse por sí mismo, pero aún no ha adquirido la forma y la organización propia de los adultos de su especie. 2.… …   Diccionario de la lengua española

  • larva — larva. См. личинка. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • larva — Forma inmadura de un animal, que sufre una metamorfosis antes de alcanzar el estado adulto. Diccionario Mosby Medicina, Enfermería y Ciencias de la Salud, Ediciones Hancourt, S.A. 1999 …   Diccionario médico

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