Definition of test card in English:

test card

Line breaks: test card

Entry from British & World English dictionary

noun

British
A still television picture transmitted outside normal programme hours and designed for use in judging the quality and position of the image.

Definition of test card in:

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Word of the day dinkum
Pronunciation: ˈdɪŋkəm
adjective
(of an article or person) genuine, honest, true