| bachelor | (noun) a man who has never been married | Synonyms: unmarried man |
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| (noun) a knight of the lowest order; could display only a pennon | Synonyms: bachelor-at-arms, knight bachelor |
| bachelorette | (noun) a young unmarried woman who lives alone | Synonyms: bachelor girl |
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| bachelorhood | (noun) the state of being an unmarried man | - |
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| (noun) the time of a man's life prior to marriage | - |
| chela | (noun) a Hindu disciple of a swami | - |
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| (noun) a grasping structure on the limb of a crustacean or other arthropods | Synonyms: claw, nipper, pincer |
| chelate | (noun) a heterocyclic compound having a metal ion attached by coordinate bonds to at least two nonmetal ions | Synonyms: chelate compound |
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| chelation | (noun) the process of forming a ring by forming one or more hydrogen bonds | - |
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| (noun) (medicine) the process of removing a heavy metal from the bloodstream by means of a chelate as in treating lead or mercury poisoning | - |
| chelicera | (noun) either of the first pair of fang-like appendages near the mouth of an arachnid; often modified for grasping and piercing | - |
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| cheloid | (noun) raised pinkish scar tissue at the site of an injury; results from excessive tissue repair | Synonyms: keloid |
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| chelonian | (noun) a reptile of the order Chelonia | Synonyms: chelonian reptile |
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| echelon | (noun) a diffraction grating consisting of a pile of plates of equal thickness arranged stepwise with a constant offset | - |
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| (noun) a body of troops arranged in a line | - |
| (noun) status in a society or organization | - |
| hatchel | (noun) a comb for separating flax fibers | Synonyms: heckle |
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| lorchel | (noun) a large fungus of the family Helvellaceae | - |
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| satchel | (noun) luggage consisting of a small case with a flat bottom and (usually) a shoulder strap | - |
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| schnorchel | (noun) air passage provided by a retractable device containing intake and exhaust pipes; permits a submarine to stay submerged for extended periods of time | Synonyms: breather, schnorkel, snorkel, snorkel breather |
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