from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A clear, cylindrical glass tube usually open at one end and rounded at the other, used in laboratory experimentation.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. a glass tube, rounded at one end and open at the other; used for small-scale laboratory tests
- adj. produced in a test tube
- adj. conceived or developed in vitro by artificial insemination
from the GNU version of the Collaborative International Dictionary of English
- n. A graduated tube.
from The Century Dictionary and Cyclopedia
- The use of the test-tube in chemistry.
- n. A cylinder of thin glass closed at one end, used in testing liquids.
- n. A chlorometer.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. glass tube closed at one end
Sorry, no etymologies found.
Squinting, he saw a fiber under the chin; he picked it off with a tweezer, nailed it as white terrycloth, placed it in a test tube and on impulse forced the half-locked jaws open, holding them wide with a tongue depressor.
When he was going to feed one, Lazear would turn the test tube upside down so that the mosquito flew upward, toward its bottom.
Each mosquito was carried in a test tube stoppered with a piece of gauze.
In the first part, they used materials in a test tube to measure the effect of alcohol, acetaldehyde, salsolinol TIQ, and enkephalin on the binding of natural enkephalin at its delta receptor sites.
White Lab’s WLP775 comes in a test tube with a heavy black screw top.
They homogenized material from the brain stem area of rats and combined it in a test tube with radioactive dopamine, vitamin C, and a chemical derived from nucleic acid called NAD.