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Show words looked up
Word |
# |
Date |
Definition |
Site |
Level |
| hydrogen |
1 |
today |
a chemical element that contains one proton in each nucleus and that occurs naturally in many compounds such as water, acids, petroleum hydrocarbons, and carbohydrates, and in pure form as a highly flammable, lighter-than-air gas used in many industrial applications, such as the hydrogenation of fats and oils. (symbol: H) (Cf. deuterium, protium, tritium.) |
Main |
Adv. |
| position |
1 |
today |
the location of a person or thing. [9 definitions] |
Main |
Adv. |
| pulley |
1 |
today |
a wheel or set of wheels with grooved edges over which a rope or chain can be drawn in order to change the direction of a pulling force and increase the capacity for lifting weight. |
Main |
Adv. |
| negotiate |
1 |
today |
to bargain or come to an agreement with another person. |
Main |
Int. |