round-bottom flasks.    From Wordnet, Princeton University. 

As a round-bottom, weight-loaded toy stands erect, so the moon maintained its position with respect to earth.    From Wordnik.com.  ["Once in a Blue Moon" by Harl Vincent, part 4] Reference

All the fractions from the sample were combined in 250-mL round-bottom flasks, evaporated in rotary evaporator, and subjected to radioanalysis (Table 2).    From Wordnik.com.  [Chapter 6] Reference

Well, perhaps not that particular person's lamp, but one of the ancient, vile-smelling oil burning jobs: long thin spout, round-bottom body, wide, flaring handle.    From Wordnik.com.  [Smart Dragons, Foolish Elves]

When the cross-section matches the template, he sets the circular die-almost like a round-bottom swage with a square base-into the anvil's hardie hole, and places the metal in the forge once more.    From Wordnik.com.  [The Magic Engineer]

Brooks next cites "a vast array of technologies: the compass, the clock, the round-bottom boat, wagons with brakes and front axles, water wheels, eyeglasses, and so on ..." as the inventions of Catholic monasteries in the Dark or Middle Ages.    From Wordnik.com.  [Larry Beinhart: Deconstructing David Brooks] Reference

A known quantity of the solution to be tested, containing acetone to the extent of 0.1 to 0.2 grm., is pipetted into a 500 c.c. round-bottom flask, diluted with a little water, and mixed with 20 to 30 c.c. of a 10 per cent. solution of caustic potash.    From Wordnik.com.  [Nitro-Explosives: A Practical Treatise] Reference

The lipid solution was transferred to a round-bottom flask, and a lipid film was created by rotary evaporation.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

The gadget is designed for cooks who get frustrated they cannot scoop out soups, stews or casseroles from saucepans with round-bottom ladles.    From Wordnik.com.  [CITIZEN-TIMES.com - News] Reference

Evidence of the tool -- perhaps a sequence of scallops across the door panels etched by his own handmade round-bottom plane -- was another of Krenov's distinctive elements.    From Wordnik.com.  [post-gazette.com - News] Reference

While he went off with the horses, Levi Bedford led the way to the raft and unmoored her, fastening the painter to the stern of the canoe, which, though so called, was, as old readers already know, really a round-bottom rowboat.    From Wordnik.com.  [An Undivided Union] Reference

100 U/ml penicillin, and 100 µg/ml streptomycin. 1 ml aliquots were then transferred into round-bottom polypropylene tubes which were incubated at 37°C and 5% CO WB cultures were mixed, then one aliquot was lysed with Triton X-100 (final concentration 1%) for determination of IL-8.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

"The ship was ... like those round-bottom, weighted toys that just sit there and rock when disturbed.    From Wordnik.com.  [www2.timesdispatch.com - News] Reference

Twelve green, round-bottom bags 43 by 30.    From Wordnik.com.  [In Africa Hunting Adventures in the Big Game Country] Reference

D&G round-bottom glasses from Occhiali.    From Wordnik.com.  [WN.com - Articles related to Even politics needs glamour: Jaya Prada] Reference

4 cells) in 96-well round-bottom plates (T cell to DC ratio, 20: 1).    From Wordnik.com.  [PLoS Biology: New Articles] Reference

5) in a pre-warmed culture medium (DMEM medium) were mixed with 5 µl of the peptide-loaded L dB7-1ICAM-1 pMVs (0.5 mg/ml) in round-bottom 96 well plate and cultured for 30 min in a 37°C humidified CO.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference