scleroid

/ˈsklɪrɔɪd/
adjective
  1. Hard or firm in texture; having a hard, stony, or woody feel.
    • The fruit's scleroid rind was so tough that a knife barely scratched it.
    • Botanists noted the scleroid tissue in the plant's stem made it difficult to cut.
    • The scleroid shell of the seed protected it from being crushed.
Antonyms
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