[si-truh-nel-al, -uh
l] 
| a colorless, slightly water-soluble liquid mixture of isometric aldehydes having the formula C10H18O, with a strong lemonlike odor, occurring in many essential oils, usually derived from lemon, citronella oil, and other oils: used chiefly as a flavoring agent and in the manufacture of perfume. |
| cit·ro·nel·lal (sĭt'rə-něl'āl') n. A colorless aromatic liquid, C10H18O, obtained from citronella and certain other essential oils or produced synthetically and used in making perfumes and as a commercial flavoring. [citronell(a) + -al3.] |