underbounds

Verb

underbound (third-person singular simple present underbounds, present participle underbounding, simple past and past participle underbounded)

1. To provide a lower bound to.
   • It will be seen that our computation time underbounds his; and that, in fact, we can give a group for which the difference in computation time is arbitrarily large.1968, Philip Martin Spira, On the Computational Complexity of Finite Functions, page 28
2. To specify or use boundaries that are too small; to have boundaries that do not encompass the entirety of an entity.
   • The Urbanized Area is often considered the best measure of urban size because it neither "underbounds" the city (by taking just the political city) or "overbounds" it (including peripheral, largely rural areas).1975, James W. Clay, Douglas Milton Orr, Alfred Wright Stuart, North Carolina Atlas: Portrait of a Changing Southern State, page 58

   Antonyms:

   overbound