مُثَلَّثٌ

A thing having three angles or corners, triangular [or trilateral]; a triangle. (S, K.) You say مُثَلَّثٌ حَادٌّ [An acute-angled triangle]: and مُثَلَّثٌ قَايءِمٌ [A right-angled triangle]. (TA.) And أَرْضٌ مُثَلَّثَةٌ A three-sided piece of land. (TA.)

A thing composed of three layers or strata, or of three distinct fascicles or the like; (M, TA;) [see also مَثْلُوثٌ;] and in like manner what are composed of four, and more, to ten [inclusive], are called by similar epithets: (TA:) or a thing of three folds. (Lth, T.)

[As a conventional term in lexicology, A word having a letter which has any of the three vowels: example gr., بَدْأَةٌ is مُثَلَّثَةُ البَاءِ; i. e., it is written بَدْأَةٌ and بُدْأَةٌ and بِدْأَةٌ. As such also, A verb having its عَيْن (or middle radical letter) movent by any of the three vowels: example gr., بَهَأَ بِهِ is مُثَلَّثٌ; i. e., it is written بَهَأَ and بَهُوءَ and بَهِيءَ. And as such, مُثَلَّثَةٌ (not مُثْلَثَةٌ) signifies Three-pointed; having three diacritical points: it is an epithet added to ثَاء, to prevent its being mistaken for بَاء or تَاء or يَاء.]

Wine (شَرَاب) cooked until the quantity of two thirds of it has gone; (S, K;) the expressed juice of grapes so cooked. (Mgh.)

And A certain electuary, or confection, of aromatics, or perfumes. (KL.)