| aroma | (noun) any property detected by the olfactory system | Synonyms: odor, odour, olfactory property, scent, smell |
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| (noun) a distinctive odor that is pleasant | Synonyms: fragrance, perfume, scent |
| atheroma | (noun) a fatty deposit in the intima (inner lining) of an artery; can obstruct blood flow | - |
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| chondroma | (noun) a common benign tumor of cartilage cells | - |
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| chroma | (noun) chromatic purity: freedom from dilution with white and hence vivid in hue | Synonyms: intensity, saturation, vividness |
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| enchondroma | (noun) benign slow-growing tumor of cartilaginous cells at the ends of tubular bones (especially in the hands and feet) | - |
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| fibroma | (noun) nonmalignant tumor of connective tissue | - |
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| neurofibroma | (noun) tumor of the fibrous covering of a peripheral nerve | Synonyms: neurilemoma |
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| neuroma | (noun) any tumor derived from cells of the nervous system | - |
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| osteochondroma | (noun) benign tumor containing both bone and cartilage; usually occurs near the end of a long bone | - |
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| prodroma | (noun) an early symptom that a disease is developing or that an attack is about to occur | Synonyms: prodrome |
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| stroma | (noun) the supporting tissue of an organ (as opposed to parenchyma) | - |
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| (noun) the dense colorless framework of a chloroplast | - |
| (noun) a mass of fungal tissue that has spore-bearing structures embedded in it or on it | - |
| xeroma | (noun) abnormal dryness of the conjunctiva and cornea of the eyes; may be due to a systemic deficiency of vitamin A | Synonyms: conjunctivitis arida, xerophthalmia, xerophthalmus |
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