growth zone


growth zone
a layer of material deposited on a scale or bone which reflects the growth of a fish. Also called growth mark or growth ring

Dictionary of ichthyology. 2009.

Look at other dictionaries:

  • annual growth zone — All growth on a structure which forms during one year; consisting of an opaque (generally winter zone) and a translucent (generally summer zone) …   Fisheries — dictionary

  • growth mark — a layer of material deposited on a scale or bone which reflects the growth of a fish. Also called growth ring or growth zone …   Dictionary of ichthyology

  • growth ring — a layer of material deposited on a scale or bone which reflects the growth of a fish. Also called growth mark or growth zone …   Dictionary of ichthyology

  • Zone — one (z[=o]n), n. [F. zone, L. zona, Gr. zw nh; akin to zwnny nai to gird, Lith. j[*u]sta a girdle, j[*u]sti to gird, Zend y[=a]h.] 1. A girdle; a cincture. [Poetic] [1913 Webster] An embroidered zone surrounds her waist. Dryden. [1913 Webster]… …   The Collaborative International Dictionary of English

  • Zone axis — Zone one (z[=o]n), n. [F. zone, L. zona, Gr. zw nh; akin to zwnny nai to gird, Lith. j[*u]sta a girdle, j[*u]sti to gird, Zend y[=a]h.] 1. A girdle; a cincture. [Poetic] [1913 Webster] An embroidered zone surrounds her waist. Dryden. [1913… …   The Collaborative International Dictionary of English

  • Zone of the Enders (series) — Zone of the Enders, commonly referred to by the acronym Z.O.E., is a franchise created by Hideo Kojima, owned by the video game publisher Konami, and expanded on by the animation studio Sunrise. The original Zone of the Enders is a game created… …   Wikipedia

  • Zone of polarizing activity — (ZPA) The small group of mesenchyme cells in avian limb buds that is located at the posterior margin of the developing bud and that produces a substance, possibly retinoic acid, that provides positional information to the developing limb bud. It… …   Wikipedia

  • Zone of the Enders — This article is about the series. For the first video game in the series, see Zone of the Enders (video game). Zone of the Enders Game Developer Konami Publisher …   Wikipedia

  • zone of inhibition — in the disk diffusion test, the area in which an antimicrobial agent inhibits growth of the isolate being tested; beyond that area, the concentration of the agent in the medium is insufficient for inhibition of bacterial growth. See illustration …   Medical dictionary

  • zone — 1) a region of similar structure or optical density laid down during growth of hard parts used in ageing. Also called band, mark and ring although zone is preferred 2) a fishing zone is a zone of variable width (up to 200 nautical miles)… …   Dictionary of ichthyology


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