monotonicadjective
/ˌmɒn.əˈtɒn.ɪk//ˌmɑː.nəˈtɑː.nɪk/monotonic adjective (SOUND)
formal speaking or spoken in such a way that the sound stays on the same note without going higher or lower
monotonic adjective (QUANTITY)
specialized mathematics (of a quantity) only ever increasing, or only ever getting less