Having the characteristics of asthma, as in an "asthmatic cough"(adjective)
A person who suffers from asthma(noun)
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Use "asthmatic" in a sentence
"Safe administration of influenza vaccine in asthmatic children hypersensitive to egg proteins."
"He has had a few episodes where we needed to use the nebulizer but he isnt classified as asthmatic YET."
"There was no sign of intoxication, but something was evidently working in the man's mind, and his breath came quickly, with a kind of asthmatic pant, from between his thin lips, still parted in the uncanny grin."