| given to using long words. |
| the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language). |
radioimmunoassay ra·di·o·im·mu·no·as·say (rā'dē-ō-ĭm'yə-nō-ās'ā, -ĭ-my&oomacr;'-)
n.
Abbr. RIA
The immunoassay of a substance, such as a hormone or an enzyme that has been radiolabeled.
radioimmunoassay (rā'dē-ō-ĭm'yə-nō-ās'ā, -ĭm-y '-) Pronunciation Key
An immunoassay in which the substance to be identified or quantified is labelled with a radioactive substance (called a tracer), such as an ion. See also immunoassay, tracer. |