[1785–95; bi-1 + lobate]This word is first recorded in the period 1785–95. Other words that entered Englishat around the same time include: crossover, guillotine, logrolling, plateau, terroristbi- is a combining form meaning “twice,” “two,” used in the formation of compound words.Other words that use the affix bi- include: bilabial, bilateral, bimodal, bipolar, bivalve