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instalment

Pronunciation: /ɪnˈstɔːlm(ə)nt/

(US also installment)

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Definition of instalment

noun

1a sum of money due as one of several equal payments for something, spread over an agreed period of time:the first instalment of a grant for housing the purchase price is paid in instalments

2any of several parts of something which are published, broadcast, or made public in sequence at intervals:filming the final instalment in his Vietnam trilogy

3 [mass noun] the process of installing something; installation:instalment will begin early next year

Origin:

mid 18th century (denoting the arrangement of payment by instalments): alteration of obsolete estalment (probably by association with installation), from Anglo-Norman French estalement, from Old French estaler 'to fix'

Spelling help

Spell instalment with one l (the spelling installment is American).

Spelling rule

If a word ends in a double l, drop the last l when adding endings which begin with a consonant (here, install plus -ment): instalment.

instalment in other Oxford dictionaries

Definition of instalment in the US English dictionary

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