English Grammar - Spelling

English Grammar
English Grammar - Spelling

Spot the correct spelling of an REE-bearing metamorphic texture word.


Options:

  1. Prophyroblastic
  2. Porphyroblastic
  3. Porfyrblastic
  4. Porphyroblastik

Right Answer: Porphyroblastic

'Porphyroblastic' is the correct spelling. In metamorphic petrology a porphyroblast is a large crystal that grows within a finer-grained matrix during metamorphism, and the adjective describes that texture. The word combines the Greek 'porphyra', meaning purple and used for porphyry rock, with 'blastos', meaning sprout or growth. Each distractor corrupts one part: 'Prophyroblastic' reorders the letters to give 'proph', 'Porfyrblastic' replaces 'ph' with 'f' and drops a vowel, and 'Porphyroblastik' ends in a non-English 'k'. Careful attention to the 'porphyro-' root settles the question. Hence option two is correct.

This question is part of English Grammar - Spelling, which has 13 practice questions with answers.

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