English-Thai Dictionary
trigonal
A เกี่ยวกับ สามเหลี่ยม ที่ มี สาม มุม ที่ มี ความ สมมาตร สาม ส่วน
Webster's 1828 Dictionary
TRIGONAL, TRIGONOUS
a.Triangular; having three angles or corners. 1. In botany, having three prominent longitudinal angles.
Webster's 1913 Dictionary
TRIGONAL
TRIGONAL Trig "o *nal, a.
Defn: Having three angles, or corners; triangular; as, a trigonal stem, one having tree prominent longitudinal angles.
New American Oxford Dictionary
trigonal
trig o nal |ˈtrigənl ˈtrɪɡənl | ▶adjective triangular: square or trigonal double-sided inserts. • chiefly Biology triangular in cross section: large trigonal shells. • of or denoting a crystal system or three-dimensional geometric arrangement having three equal axes separated by equal angles that are not right angles. DERIVATIVES trig o nal ly adverb ORIGIN late 16th cent.: from medieval Latin trigonalis, from Latin trigonum (see trigon ).
Oxford Dictionary
trigonal
trigonal |ˈtrɪg (ə )n (ə )l | ▶adjective triangular: square or trigonal double-sided inserts. • chiefly Biology triangular in cross section: large trigonal shells. • of or denoting a crystal system or three-dimensional geometrical arrangement having three equal axes separated by equal angles that are not right angles. DERIVATIVES trigonally adverb ORIGIN late 16th cent.: from medieval Latin trigonalis, from Latin trigonum (see trigon ).
Duden Dictionary
trigonal
tri go nal Adjektiv Mathematik |trigon a l |spätlateinisch trigonalis, zu lateinisch trigonium < griechisch trígōnon = Dreieck dreieckig
Trigonalzahl
Tri go nal zahl Substantiv, feminin , die |Trigon a lzahl |Dreieckszahl
The Wordsmith Dictionary