[ik-splawr-er, -splohr-] 
| 1. | a person or thing that explores. |
| 2. | a person who investigates unknown regions: the great explorers of the Renaissance. |
| 3. | any instrument used in exploring or sounding a wound, a cavity in a tooth, or the like. |
| 4. | (initial capital letter ) Also called Explorer Scout. a person between the ages 14 and 20 who is an active participant in the exploring program sponsored by the Boy Scouts of America. |
| 5. | (initial capital letter) Aerospace. one of a long series of U.S. scientific satellites: Explorer 1 (1958) was the first U.S. artificial satellite. |
| ex·plor·er (ĭk-splôr'ər, -splōr'-) n.
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explorer ex·plor·er (ĭk-splôr'ər)
n.
A sharp, pointed probe used on tooth surfaces to detect caries or other defects.