drawtube
noun Date: 1874 a telescoping tube (as for the eyepiece of a microscope)

New Collegiate Dictionary. 2001.

Look at other dictionaries:

  • drawtube — [drô′to͞ob΄, drô′tyo͞ob΄] n. a tube sliding within another tube, as in the eyepiece of a microscope: see MICROSCOPE …   English World dictionary

  • drawtube — /draw toohb , tyoohb /, n. a tube sliding within another tube, as the tube carrying the eyepiece in a microscope. [1890 95; DRAW + TUBE] * * * …   Universalium

  • drawtube — draw•tube [[t]ˈdrɔˌtub, ˌtyub[/t]] n. opt a tube sliding within another tube, as the tube carrying the eyepiece in a microscope • Etymology: 1890–95 …   From formal English to slang

  • drawtube — /ˈdrɔtjub/ (say drawtyoohb) noun a tube sliding within another tube, as the tube carrying the eyepiece in a microscope …   Australian English dictionary

  • drawtube — ˈ ̷ ̷ˌ ̷ ̷ noun : a telescoping tube (as that containing the eyepiece of certain optical instruments) * * * /draw toohb , tyoohb /, n. a tube sliding within another tube, as the tube carrying the eyepiece in a microscope. [1890 95; DRAW + TUBE] …   Useful english dictionary

  • Crayford focuser — The first Crayford focuser (1968). The Crayford focuser is a simplified focusing mechanism for amateur astronomical telescopes. The design replaces the complicated rack and pinion drive normally found in this type of device with a smooth spring… …   Wikipedia

  • compound microscope — noun Date: circa 1859 a microscope consisting of an objective and an eyepiece mounted in a drawtube …   New Collegiate Dictionary

  • Chillum (pipe) — An Italian made chillum …   Wikipedia

  • Chalice (pipe) — A Chalice, also known as a Wisdom Chalice or Chillum Chalice, is a type of smoking pipe used most often by members of the Rastafari movement. It is a sort of water pipe with a hose, or drawtube, for inhaling. The water cools and filters the smoke …   Wikipedia

  • compound microscope — noun light microscope that has two converging lens systems: the objective and the eyepiece • Hypernyms: ↑light microscope • Part Meronyms: ↑objective, ↑objective lens, ↑object lens, ↑object glass * * * noun : a microscop …   Useful english dictionary

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