func·tion·al 
(fŭngkshə-nəl)
(fŭngkshə-nəl)adj.
1.
a. Of or relating to a function.
b. Of, relating to, or indicating a mathematical function or functions.
2. Designed for or adapted to a particular function or use: functional architecture.
3.
a. Capable of performing a function; operative: a functional set of brakes.
b. Able to function personally or socially despite limitations or impairment: a functional alcoholic.
4. Medicine Involving physiological function rather than anatomical structure.
n.
A linear function on vectors whose values are scalars.
- byte
- by the by
- by the bye
- by the bye/by
- by the numbers
- by the same token
- by the seat of (one's) pants
- by the seat of one's pants
- by the seat of pants
- by the skin of (one's) teeth
- by the skin of one's teeth
- by the skin of teeth
- by the way
- Bytom
- slave
- slave ant
- Slave Coast
- slave driver
- slaveholder
- slaveholding
- slave-making ant
- slaver
- slaver
- Slave River
- slavery