sand disk
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sand dollar — any of various flat, disklike sea urchins, as Mellita testudinata or Echinarachnius parma, that live on sandy bottoms off the coasts of the U.S. [1880 85, Amer.] * * * Any echinoderm (order Clypeastroida, class Echinoidea) that has a coinlike,… … Universalium
disk pile — noun : a steel pile having a disk on its lower end to give increased supporting power * * * disk pile, an iron pile, having a disk or flange as a foot, used for foundations in sand … Useful english dictionary
sand dollar — noun An echinoderm, of the order Clypeastroida, that has a flat, disk shaped body with the mouth in a mid ventral position, and lives in sand, on or near the surface … Wiktionary
disk-urchin — ˈ ̷ ̷ˌ ̷ ̷ ̷ ̷ noun : a flattened sea urchin (as a sand dollar or a keyhole urchin) … Useful english dictionary
Keyhole sand dollar — Taxobox name = Keyhole sand dollar image caption = Mellita quinquiesperforata regnum = Animalia phylum = Echinodermata classis = Echinoidea ordo = Clypeasteroida subordo = Scutellina familia = Mellitidae familia authority = Leske, 1778… … Wikipedia
The Disk — Infobox short story | name = The Disk title orig = El Disco translator = author = Jorge Luis Borges country = Argentina flagicon|Argentina language = Spanish series = genre = Fantasy, short story published in = publisher = media type = Print pub… … Wikipedia
echinoderm — /i kuy neuh derrm , ek euh neuh /, n. any marine animal of the invertebrate phylum Echinodermata, having a radiating arrangement of parts and a body wall stiffened by calcareous pieces that may protrude as spines and including the starfishes, sea … Universalium
agricultural technology — Introduction application of techniques to control the growth and harvesting of animal and vegetable products. Soil preparation Mechanical processing of soil so that it is in the proper physical condition for planting is usually… … Universalium
chondrichthian — /kon drik thee euhn/, n. any member of the class Chondrichthyes, comprising the cartilaginous fishes. [ < NL, equiv. to chondr CHONDR + Gk ichthýes (pl.) fish] * * * ▪ fish class Introduction class name Chondrichthyes, or Selachii any… … Universalium
perciform — ▪ fish order Introduction any member of the order Perciformes, a group of bony fishes with more than 6,000 species placed in about 150 families. The order is the largest group of fishes in the world today. Perciform fishes occur in… … Universalium
metallurgy — metallurgic, metallurgical, adj. metallurgically, adv. metallurgist /met l err jist/ or, esp. Brit., /meuh tal euhr jist/, n. /met l err jee/ or, esp. Brit., /meuh tal euhr jee/, n. 1. the technique or science of working or heating metals so as… … Universalium
