equationaladj.

/ɪˈkweɪʃənəl/

Etymology: < equation n. + -al suffix¹.

1. Pertaining to, or involving the use of, equations.

ΘΚΠ

the world > relative properties > number > algebra > [adjective] > relating to expressions > relating to equations

algebraic1657

lateral1670

explicable1706

unreduced1762

homogeneous1815

resolvent1860

Pellian1862

equational1864

canonizant1879

variational1879

unilateral1884

non-dimensional1904

open1937

inhomogeneous1943

stiff1952

1864 W. Hipsley (title) Equational Arithmetic: Questions of Interest, Annuities, &c.

1880 Athenæum 13 Nov. 636/3 A further theoretical aid in equational logic.

2. Mechanics. Of gearing, etc.: equalizing, adjusting; equational box (see quot. 1875).

ΚΠ

1875 E. H. Knight Amer. Mech. Dict. II. 807/2 Equational box, invented by Houldsworth. A differential gearing used in the bobbin and fly machine for the adjustment of different degrees of twist, for different yarns.

3. Biology. [translating German aequationstheilung ‘equation division’ (A. Weismann Ueber die Zahl der Richtungskörper (1887) ii. 42).] Of a division of the chromosomes in a cell: taking place longitudinally and resulting in two equal segments that are incorporated into the daughter nuclei.

ΚΠ

1920 W. E. Agar Cytol. 50 Now in a meiosis with tetrad formation of the Copepod type it follows that if both the joints represent division planes, one division must be longitudinal (or equational, since the resulting daughter chromosomes receive similar sets of chromatin elements), and the other division must be transverse (or reductional, since each resulting daughter chromosome receives only one half of the set of chromatin elements).

1949 C. D. Darlington & K. Mather Elements of Genetics ii. 52 The distribution of the chiasmata in the pairing segment relative to the centromere and the differential segments then decides whether the first division is reductional for these segments or equational.

4. Grammar. Of a sentence or phrase (see quots.).

ΚΠ

1933 L. Bloomfield Lang. xi. 173 The equational type [of sentence] was less common [in Latin] than in Russian: beātus ille ‘happy (is) he’.

1961 R. B. Long Sentence & its Parts v. 115 The common-voice forms of be are reversible when be is a true equational verb. The worst thing is the lights.

1964 Language 40 272 ‘Equational sentence’ is a good term for a sentence containing a copula.

1964 R. H. Robins Gen. Linguistics vi. 234 In some languages a favourite, productive, sentence type is found beside those containing a verb, namely a noun + noun or a noun + adjective structure, with no verb required to complete it. This type, which is sometimes labelled equational, is found in Russian.

Derivatives

eˈquationally adv. in an equational form; by the use of equations.

ΘΚΠ

the world > relative properties > number > algebra > [adverb] > involving or with reference to equations

really1706

simultaneously1814

equationally1881

quadratically1928

perturbatively1955

1881 W. S. Jevons in Nature 24 Mar. 487/2 They [sc. secondary propositions] obey exactly the same formal laws as primary propositions, and are of course expressed equationally.

This entry has not yet been fully updated (first published 1891; most recently modified version published online December 2021).

单词	equational
释义	equationaladj. /ɪˈkweɪʃənəl/ Etymology: < equation n. + -al suffix¹. 1. Pertaining to, or involving the use of, equations. ΘΚΠ the world > relative properties > number > algebra > [adjective] > relating to expressions > relating to equations algebraic1657 lateral1670 explicable1706 unreduced1762 homogeneous1815 resolvent1860 Pellian1862 equational1864 canonizant1879 variational1879 unilateral1884 non-dimensional1904 open1937 inhomogeneous1943 stiff1952 1864 W. Hipsley (title) Equational Arithmetic: Questions of Interest, Annuities, &c. 1880 Athenæum 13 Nov. 636/3 A further theoretical aid in equational logic. 2. Mechanics. Of gearing, etc.: equalizing, adjusting; equational box (see quot. 1875). ΚΠ 1875 E. H. Knight Amer. Mech. Dict. II. 807/2 Equational box, invented by Houldsworth. A differential gearing used in the bobbin and fly machine for the adjustment of different degrees of twist, for different yarns. 3. Biology. [translating German aequationstheilung ‘equation division’ (A. Weismann Ueber die Zahl der Richtungskörper (1887) ii. 42).] Of a division of the chromosomes in a cell: taking place longitudinally and resulting in two equal segments that are incorporated into the daughter nuclei. ΚΠ 1920 W. E. Agar Cytol. 50 Now in a meiosis with tetrad formation of the Copepod type it follows that if both the joints represent division planes, one division must be longitudinal (or equational, since the resulting daughter chromosomes receive similar sets of chromatin elements), and the other division must be transverse (or reductional, since each resulting daughter chromosome receives only one half of the set of chromatin elements). 1949 C. D. Darlington & K. Mather Elements of Genetics ii. 52 The distribution of the chiasmata in the pairing segment relative to the centromere and the differential segments then decides whether the first division is reductional for these segments or equational. 4. Grammar. Of a sentence or phrase (see quots.). ΚΠ 1933 L. Bloomfield Lang. xi. 173 The equational type [of sentence] was less common [in Latin] than in Russian: beātus ille ‘happy (is) he’. 1961 R. B. Long Sentence & its Parts v. 115 The common-voice forms of be are reversible when be is a true equational verb. The worst thing is the lights. 1964 Language 40 272 ‘Equational sentence’ is a good term for a sentence containing a copula. 1964 R. H. Robins Gen. Linguistics vi. 234 In some languages a favourite, productive, sentence type is found beside those containing a verb, namely a noun + noun or a noun + adjective structure, with no verb required to complete it. This type, which is sometimes labelled equational, is found in Russian. Derivatives eˈquationally adv. in an equational form; by the use of equations. ΘΚΠ the world > relative properties > number > algebra > [adverb] > involving or with reference to equations really1706 simultaneously1814 equationally1881 quadratically1928 perturbatively1955 1881 W. S. Jevons in Nature 24 Mar. 487/2 They [sc. secondary propositions] obey exactly the same formal laws as primary propositions, and are of course expressed equationally. This entry has not yet been fully updated (first published 1891; most recently modified version published online December 2021). < adj.1864
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