semi-logarithmicadj.
Having or being a scale that is linear in one direction and logarithmic in the other. Cf. semi-log adj.
ΚΠ
1919 A. C. Haskell How to make & use Graphic Charts iv. 20 The semi-logarithmic chart has a wide use for the plotting of comparative statistics of similar kind but dissimilar magnitude.
1930 R. Pearl Introd. Med. Biometry & Statistics (ed. 2) vi. 183 The scale of the ordinates is divided not in arithmetic progression but in proportion to the logarithms of numbers in arithmetic progression. Such a ruling is called an arithlog or semi-logarithmic grid.
1977 J. L. Harper Population Biol. Plants xv. 458 Some of these are redrawn in Fig. 15/1 on a semi~logarithmic scale to show the change in range of dispersal if the seed crop is halved.
Derivatives
ˌsemi-logaˈrithmically adv.
ΚΠ
1919 A. C. Haskell How to make & use Graphic Charts iv. 18 This is shown very clearly by charting the same data on both arithmetically and semi-logarithmically ruled paper.
1976 Nature 11 Mar. 153/2 Figure 1 is an action spectrum obtained by plotting semi~logarithmically the reciprocal of retinal irradiance (1/W cm—2) against wavelength (nm) for each exposure duration.
This entry has not yet been fully updated (first published 1986; most recently modified version published online December 2020).
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adj.1919