binomial

adj

1. (not-comparable)Consisting of two terms, or parts.

   “Finally, instead of returning to Chile’s traditional proportional representation system, the law adopted the “binomial” system, which gave strong incentives to the parties to form broad coalitions.”

2. (not-comparable)Of or relating to the binomial distribution.

   “Assuming a normal approximation to binomial probabilities the proportion of total complications reported for 1979–85 in the age class 0–14 years was significantly higher than the proportion in the same age class for the period 1962–69 (p < 0·0001)”

noun

1. A polynomial with two terms.
2. A quantity expressed as the sum or difference of two terms.
3. A scientific name at the rank of species, with two terms: a generic name and a specific name.

   “Common name followed by Latin binomial in parentheses.”