List of 15-letter words containing

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There are 19 fifteen-letter words containing IATION

ASSOCIATIONISMS	• associationisms n. Plural of associationism. • ASSOCIATIONISM n. the theory which considers association of ideas to be the basis of all mental activity.
ASSOCIATIONISTS	• associationists n. Plural of associationist. • ASSOCIATIONIST n. one who believes in the theory of associationism.
BIOREMEDIATIONS	• bioremediations n. Plural of bioremediation. • BIOREMEDIATION n. the treatment of pollutants or waste (as in an oil spill, contaminated groundwater, or an industrial process) by the use of microorganisms (as bacteria) that break down the undesirable substances.
DIFFERENTIATION	• differentiation n. The act or process of differentiating (generally, without a specialized sense). • differentiation n. (Biology) The process by which the components of multicellular life (Cells, organs, etc.) are produced… • differentiation n. (Biology, evolution) The evolutionary process by which one taxonomic group (Species, genus, variety…
DISAFFILIATIONS	• disaffiliations n. Plural of disaffiliation. • DISAFFILIATION n. the act of disaffiliating.
DISASSOCIATIONS	• disassociations n. Plural of disassociation. • DISASSOCIATION n. the act of disassociating.
EXPONENTIATIONS	• exponentiations n. Plural of exponentiation. • EXPONENTIATION n. the mathematical operation of raising a quantity to a power.
INAPPRECIATIONS	• INAPPRECIATION n. lack of appreciation.
INTERMEDIATIONS	• intermediations n. Plural of intermediation. • INTERMEDIATION n. the act of coming between.
MISAPPRECIATION	• misappreciation n. A failure to correctly and completely understand; an incorrect notion or belief that is a result of such a failure. • misappreciation n. (Dated) An observed failure to appreciate the proper worth of a person, an act or a thing. • MISAPPRECIATION n. a wrong appreciation.
POSTIRRADIATION	• postirradiation adj. After irradiation. • POSTIRRADIATION adj. taking place after irradiation.
PRENEGOTIATIONS	• prenegotiations n. Plural of prenegotiation. • PRENEGOTIATION n. negotiation in advance.
PRONUNCIATIONAL	• pronunciational adj. Of or relating to pronunciation. • PRONUNCIATIONAL adj. relating to pronunciation.
RECONCILIATIONS	• reconciliations n. Plural of reconciliation. • RECONCILIATION n. the action of reconciling.
REPUDIATIONISTS	• repudiationists n. Plural of repudiationist. • REPUDIATIONIST n. a person who favours repudiation of public debt.
RETALIATIONISTS	• retaliationists n. Plural of retaliationist. • RETALIATIONIST n. one who believes in retaliation.
SUBASSOCIATIONS	• subassociations n. Plural of subassociation. • SUBASSOCIATION n. a subordinate association.
SUBSTANTIATIONS	• substantiations n. Plural of substantiation. • SUBSTANTIATION n. the act of substantiating.
UNAPPRECIATIONS	• UNAPPRECIATION n. failure to appreciate something.

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the WikWik.org and 1Word.ws.

See this list for:

English Wiktionary: 85 words
Scrabble in French: 9 words
Scrabble in Spanish: no word
Scrabble in Italian: no word
Scrabble in German: no word
Scrabble in Romanian: 8 words

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