- Any of a series of radioactive elements with atomic numbers 89 through 103
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- Comb-like respiratory structure serving as the gill of certain mollusks
- (v. t.) To point out; to discover; to direct to a knowledge of; to show; to make known.
- (v. t.) To show or manifest by symptoms; to point to as the proper remedies; as, great prostration of strength indicates the use of stimulants.
- (v. t.) To investigate the condition or power of, as of steam engine, by means of an indicator.