Noun
the chemical group -CHO
Source: WordNetIf the presence of another functional group demands the use of a suffix, the aldehyde group is named with the prefix formyl-. Source: Internet
The aldehyde group of this is reduced to a primary alcohol using the enzyme glucuronate reductase and the cofactor NADPH, yielding L -gulonic acid. Source: Internet
The group—without R—is the aldehyde group, also known as the formyl group. Source: Internet