logic English · revision 5704

+ {{infobox|confidence=established|formation=borrowing|attested=1362|origins=grc logike}}

+

+ ==Pronunciation==

+ * IPA: UK /ˈlɒdʒ.ɪk/, US /ˈlɑː.dʒɪk/^(Roach et al. 2011)

+

+ ==Etymology==

+ It is Middle English logike, [[bor|fro|logique]],^(Etymonline)^(Barnhart 1988)^(Hoad 1986) from [[la-lat|logica]],^(Barnhart 1988)^(Hoad 1986) from [[grc|λογική|tr=logikḗ]], short for logikḗ tékhnē “the art of reasoning”,^(Etymonline)^(Barnhart 1988)^(Hoad 1986) the feminine of [[m|grc|λογικός|tr=logikós|t=of speech or reasoning]], from [[m|grc|λόγος|tr=lógos|t=word, reason, idea]] (see [[Logos]]),^(Etymonline)^(Barnhart 1988) from [[m|grc|λέγειν|tr=légein|t=to speak]].^(Barnhart 1988)

+

+ ==Earliest recorded meaning==

+ The branch of philosophy that treats of the forms of thinking and of true and false reasoning: 1362 in the OED, before 1378 in Barnhart, in a version of ''Piers Plowman''.^(OED 1989)^(Barnhart 1988)

+

+ ==Semantic evolution==

+ A system of logic or a treatise on it is from 1377.^(OED 1989) Logical argumentation is from 1601, and a means of proving or convincing, as in ''the logic of the situation'', from 1682.^(OED 1989)^(Barnhart 1988) It was formerly written logick, and was sometimes plural like ethics (1637).^(Etymonline)^(OED 1989) The system underlying the operations of a computer is from 1950, and compounds such as ''logic circuit'' from 1953.^(OED 1989)^(Barnhart 1988) In Gloucestershire and Devon dialect, logic meant nonsense or abuse.^(Wright 1898) ''Logical'' is probably from before 1425.^(Barnhart 1988)

+

+ ==Timeline==

+ * 1362 – the branch of philosophy.^(OED 1989)

+ * 1377 – a system of logic.^(OED 1989)

+ * 1601 – logical argument.^(OED 1989)

+ * 1682 – a means of proving.^(OED 1989)

+ * 1950 – logic in computing.^(OED 1989)^(Barnhart 1988)

+

+ ==Modern meaning==

+ ===Noun===

+ # The study of the principles of correct [[reasoning]].^(AHD)^(Collins 2023)

+ # A particular way of reasoning, or sound reasoning: ''there's no logic in that''.^(AHD)^(Collins 2023)

+ # The relationship between events that seems to make them necessary: ''the logic of war''.^(AHD)^(Collins 2023)

+ # ''(computing)'' The principles and [[circuit|alt=circuits]] that carry out logical operations in a [[computer]].^(AHD)^(OED 1989)

+

+ ==Word family==

+ * [[logician]]

+ * [[logicless]]

+

+ ==Related words==

+ * [[logical]]

+ * [[Logos]]

+ * [[-logy]]

+ * [[prologue]]

+ * [[logo]]

+ * [[legend]]

+

+ ==References==

+ {{reflist}}