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Definition
| A means of locating an object using an emitted sound and the reflection back from it |
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| A noninvasive technique that uses ultrasound to record the functioning of the heart |
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Definition
| Formed in imitation of some natural sound |
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Definition
| Involuntary parrot like repetition of a word or phrase just spoken by another, echoing |
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Definition
| Free from echoes and reverberations |
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Definition
| The outer part of the solid earth composed of rock |
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Definition
| Related to early Stone Age |
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Definition
| A genus of early Man, dawn man |
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Definition
| A very early and crude stone tool |
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Definition
| The process or method of printing from metal or stone surfaces |
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Definition
| Relating to the second epoch of the tertiary period |
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