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4 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 thal·lus /ˈθæləs/

From: DICT.TW English-Chinese Medical Dictionary 英漢醫學字典

 thal·lus /ˈθæləs/ 名詞

From: Webster's Revised Unabridged Dictionary (1913)

 Thal·lus n.; pl. Thalli   Bot. A solid mass of cellular tissue, consisting of one or more layers, usually in the form of a flat stratum or expansion, but sometimes erect or pendulous, and elongated and branching, and forming the substance of the thallogens.

From: WordNet (r) 2.0

      n : a plant body without true stems or roots or leaves or
          vascular system; characteristic of the thallophytes
      [also: thalli (pl)]