overlay

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o·ver·lay

(ō'vĕr-lā),
An addition to an already existing condition.

o·ver·lay

(ō'vĕr-lā)
An addition to an already existing condition.
References in periodicals archive ?
Mr Haji is to visit Birmingham's Yorkmead School to train teachers how to assess pupils using the coloured over-lays.
Mr Haji believes every school should have at least one pack of coloured over-lays. He believes the investment -less than pounds 60 -is a worthwhile expenditure of school budgets.
'Some schools get back to me and buy some over-lays from us, but they are far too few.'