Dictionary:

profusion

  (prə-fyū'zhən, prō-)

1. The state of being profuse; abundance.
2. Lavish or unrestrained expense; extravagance.
3. A profuse outpouring or quantity: “A profusion of chiles—mild Anaheim to hot jalapeño—perks up everything” (Gene Bourg).

noun

1. Excessive or imprudent expenditure: extravagance, extravagancy, lavishness, prodigality, profligacy, profuseness, squander, waste, wastefulness. See careful/careless, save/waste.
2. A great deal: abundance, mass, mountain, much, plenty, wealth, world. Informal barrel, heap, lot, pack, peck², pile. Regional power, sight. See big/small/amount.

The noun has one meaning:

Meaning #1: the property of being extremely abundant
  Synonyms: profuseness, richness, cornucopia

Common misspelling(s) of profusion

• profesion