extensionaladj.
/ɛkˈstɛnʃənəl/ 1. Of, pertaining to, or possessed of extension.
ΘΚΠ
the world > space > extension in space > expansion or enlargement > [adjective] > expanding
dilating1581
bushing1607
widening1615
explicatinga1630
extensional1647
extending1812
dilatant1841
broadening1850
expanding1859
extensory1885
mushrooming1954
1647 H. More Philos. Poems ii. ii. iii. xx But that some virtue's not extentionall May thus be proved.
1667 H. More Divine Dialogues (1668) ii. xxxiv. 149 You run always into these extensional Phantasms.
1773 S. Johnson Dict. Eng. Lang. (ed. 4) ; whence in mod. Dicts.
2. Logic. Of, or relating to, logical extension (cf. extension n. 8b); esp., concerned with the objects denoted rather than with the predicates applied.
ΘΚΠ
the mind > mental capacity > philosophy > logic > logical classification > [adjective] > of logical extension
superior1599
distributable1654
extensive1686
undistributed1827
indistributable1847
extensional1852
coextensive1870
1852 H. L. Mansel Artis Logicæ Rudim. of Aldrich (ed. 2) App. 221 In this respect it [sc. Aristotelian Induction] is synthetical, the parts and whole being viewed in their logical or extensional relation.
1903 B. Russell Princ. Math. §68 Thus Brown and Jones are a class, and Brown singly is a class. This is the extensional genesis of classes.
1926 F. P. Ramsey in Proc. London Math. Soc. 25 348 In calling mathematics extensional we mean that it deals not with predicates but with classes, not with relations in the ordinary sense but with possible correlations, or ‘relations in extension’.
This entry has not yet been fully updated (first published 1894; most recently modified version published online September 2018).
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adj.1647