slow-reacting substance of anaphylaxis n.
Abbr. SRS-A
A substance released in anaphylactic shock that produces slower and more prolonged contraction of muscle than does histamine. Also called slow-reacting factor of anaphylaxis.
| a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes. |
| a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question. |
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