English Vocabulary
Pick a CEFR level (A1–C2) — A1 is the friendliest place to start — and browse its words grouped by topic: travel, food, the body, emotions, and more. Each word shows its meaning, example sentences, and US/UK pronunciation.
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All 27,237 words
519 words
one-dimensional
C1
/ˌwʌn dəˈmɛnʃənəl/
having or treating only one dimension; overly narrow or lacking depth
first-order
C2
/ˌfɜrstˈɔrdər/
belonging to the first level, degree, or order; in logic, quantifying over individuals rather than predicates
second-order
C2
/ˌsɛkəndˈɔrdər/
belonging to the second level or order; in logic, quantifying over predicates or sets
three-term
C2
/ˈθriˌtɜrm/
involving three terms or elements
denumerative
C2+
/dɪˈnumərətɪv/
relating to counting or enumeration
semi-similar
C2+
/ˌsɛmiˈsɪmələr/
partly similar; in Russellian logic, sharing a weaker similarity relation
point-pair
C2+
/ˈpɔɪntˌpɛr/
a pair of points considered together in a geometric or logical construction
footrule
C2+
/ˈfʊtˌruːl/
a measuring rule one foot long, usually divided into inches
parallelogramical
C2+
/ˌpærəleləˈɡræmɪkəl/
having the form or geometric properties of a parallelogram; relating to parallelograms
quasi-equality
C2+
/ˌkweɪzaɪ ɪˈkwɑːləti/
in mathematics or logic, a relation weaker than strict equality under which two objects count as equal for a specified approximate or domain-specific purpose
quasiperiodic
C2
/ˌkwɑː.zaɪˌpɪr.iˈɑː.dɪk/
physics and mathematics: combining two or more incommensurate periods, so that a pattern recurs without repeating after one fixed interval
metrizable
C2
/ˈmɛt.raɪ.zə.bəl/
topology: having a metric that induces the space's given topology
quasistraight
C2+
/ˌkweɪzaɪˈstɹeɪt/
almost or approximately straight; treated as a straight line for a limited mathematical purpose
triangularity
C1
/traɪˌæŋ.ɡjəˈler.ə.t̬i/
the state, quality, or abstract property of being triangular
medimnus
C2+
/məˈdɪm.nəs/
an ancient Greek unit of dry capacity, varying by place and period and equal in Athens to roughly 52 liters or one and a half bushels
algebraical
C2
/ˌældʒɪˈbreɪɪkəl/
relating to algebra or carried out by algebraic methods; a now less common variant of algebraic
arpent
C2
/ˈɑːr.pənt/
historical: any of several French units of land area, varying by place and still encountered in records from Quebec and Louisiana
pseudosphere
C2+
/ˈsuː.doʊˌsfɪr/
a surface of constant negative Gaussian curvature, classically generated by rotating a tractrix about its asymptote
quasi-transitive
C2+
/ˌkweɪzaɪ ˈtrænzətɪv/
approximately transitive; allowing a weaker or graded relation between the first and third terms when successive pairs are related
subtend
C2
/səbˈtɛnd/
to lie opposite an angle, or to have an angle formed at a point by lines drawn to the ends of an arc, line, or object
unperiodic
C2+
/ˌʌnpɪriˈɑdɪk/
not periodic; not recurring at regular intervals or lacking a repeating pattern
equimultiple
C2+
/ˌiːkwɪˈmʌltəpəl/
one of two or more quantities produced by multiplying the original quantities by the same number
pre-coordinate
C2+
/ˌpriːkoʊˈɔrdənət/
existing or formulated before a coordinate system has been introduced
quasi-parallelogram
C2+
/ˌkweɪzaɪ ˌpærəˈlɛləˌɡræm/
a figure that resembles or approximately satisfies the defining relations of a parallelogram without being an exact Euclidean parallelogram
logico-mathematical
C2+
/ˌlɑː.dʒɪ.koʊˌmæθ.əˈmæt.ɪ.kəl/
relating jointly to formal logic and mathematics, especially to work that expresses mathematical theories through logical systems
setier
C2+
/səˈtjeɪ/
any of several old French units of capacity or land area, whose value varied by region and commodity
juger
C2
/ˈdʒuːɡɚ/
an ancient Roman unit of land area equal to 28,800 square Roman feet, about 0.25 hectare or 0.62 acre
chaldron
C2
/ˈtʃɔːldrən/
historical: any of several British dry measures, especially a coal measure varying locally from about 32 to 72 imperial bushels
sesquialtera
C2
/sɛskwɪˈaltərə/
in mathematics or musical theory, the ratio 3:2, in which one quantity is one and a half times another
connexity
C2
/kəˈnɛk.sə.ti/
in logic and order theory, the property of a relation whereby any two distinct relevant terms are related in one direction or the other
signless
C2+
/ˈsaɪn.ləs/
in mathematics, written or considered without an explicit positive or negative sign
handbreadth
C2
/ˈhændˌbrɛdθ/
a unit or distance equal to the breadth of a hand, roughly four inches or ten centimetres
arithmetization
C2
/əˌrɪθmətəˈzeɪʃən/
the treatment of mathematics or another formal system by methods involving only the fundamental concepts and operations of arithmetic
arithmetize
C2+
/əˈrɪθməˌtaɪz/
to treat or reformulate a mathematical system using only the fundamental concepts and operations of arithmetic
rhomb
C2
/rɑːm/
a rhombus; a parallelogram whose four sides are equal
finitist
C2+
/ˈfaɪnaɪtɪst/
an adherent of finitism, especially the view that mathematics should use only finite objects or procedures
rectilineal
C2
/ˌrɛktəˈlɪniəl/
formed by, bounded by, or moving in straight lines
chiliagon
C2+
/ˈkɪliəˌɡɑn/
a polygon with one thousand sides and one thousand angles
scalenum
C2+
/skəˈliːnəm/
a scalene triangle, having three sides of unequal length