subintervaln.
/ˈsʌbɪntəvl/, U.S. /ˈsəbˌɪn(t)ərv(ə)l/ Chiefly Mathematics.
A subdivision of an interval between two times, numerical values, etc.; (also) an interval forming a subset of another interval (interval n. 7b).
ΚΠ
1859 Math. Monthly 1 246 In general, the numbers q[n], which express the ratios of successive sub-intervals, should be unity.
1867 G. F. Chambers Descr. Astron. i. i. 17 The interval 11.1 being divided into two unequal sub-intervals of 4.77y and 6.34y.
1962 D. R. Cox Renewal Theory ii. 30 To obtain (1) from first principles, divide the time interval (O, t) into a large number k of small subintervals of length Δt, where kΔt = t.
2007 W. M. Bolstad Introd. Bayesian Statistics (ed. 2) vii. 123 As n increases, we get a larger number of shorter subintervals. The histograms get closer and closer to a smooth curve.
This entry has been updated (OED Third Edition, June 2012; most recently modified version published online March 2022).
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n.1859