Wiktionary
n. (test tube English)
Usage examples of "test tubes".
He left her there, carefully picking up the test tubes and moving them to his laboratory bench.
From the cabinet, he took a rack of test tubes, a tiny alcohol lamp, and a length of platinum wire set in a little glass rod.
The walls of the lab were lined with shelves and cupboards containing jars and bottles and retorts and test tubes and such-like chemical junk, but I didn't give them more than a glance.
She put the samples into small test tubes and filled the tubes up with a fast-drying plastic resin.
I had something like that for organic chlorine compounds, a test built into small plastic test tubes.
Then I turned to the minister in front of us, but it was Mae, and she was pouring colored liquids back and forth in test tubes.
And that pig- they tell me it's a descendant of a boar out of your test tubes.