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precursor
crucial

pre·cur·sor

precursor

 
 
pronunciation:
pri kuhr sr [or] pri kuhr sr
features:
Word Combinations (noun), Word Parts
part of speech: noun
definition 1: one that comes before and proclaims the arrival of someone or something; indication that a specific event will soon take place.
The first frost is a precursor of winter.
synonyms:
forerunner, harbinger, herald, sign
similar words:
ancestor, foretoken, indicator
definition 2: an earlier or previous person, group, event, or form of something; predecessor.
The biplane was a precursor of the modern jetliner.His precursor left him much work to do.
synonyms:
ancestor, antecedent, forerunner, predecessor
similar words:
archetype, forefather, progenitor
Word Combinations  About this feature
adjective + (n.)precursor amyloid, attitudinal, biochemical, catalytic, chemical, cognitive, critical, crucial, direct, evolutionary, immediate, known, literary, mere, necessary, obvious, psychotropic, so-called, steroid, usual
verb + (n.)precursor contain, function, isolate, reduce, suspect, transform
(n.)precursor + verb convert, transport
noun + (n.)precursor Help analyst, arrangement, awareness, brain, choline, competence, creation, delivery, emission, flow, laundering, marrow, missile, nitrogen, novel, odor, oxide, ozone, poem, pollutant, polyp, preparation, serotonin, serum, source, steroid, supernova, ton, upwind  [See all][See only the most frequent]
derivation: precursive (adj.)
Word Parts  About this feature
The word precursor contains the following parts:
cur1, curr, cor1, corr, curs, cour1, cours Latin root that means to run