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Definition
| Formed in imitation of some natural sound |
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Definition
a very early & crude stone tool
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Definition
| a means of locating an object using an emitted sound and the reflection back from |
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Definition
| a noninvasive techique that uses ultrasound to record the functioning of the heart |
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Definition
| involuntary parrot-like repition back from it |
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Definition
| free from echos and reverberations |
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Definition
| the outer part of the soilder earth composed of rock |
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Definition
| related to the early stone ages |
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| a genus of early man (comprising only the Piltdown man);dawn man |
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Definition
| the process or method of printing from a metal or stone surface |
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Definition
| relating to the second epoch of the Tertiary period. |
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