(греч., от treis - три, и gonia - угол). Трехсторонница, род раковины.
(Источник: «Словарь иностранных слов, вошедших в состав русского языка». Чудинов А.Н., 1910)
"Sweet mercy is nobility's true badge." William Shakespeare
"It is better to know some of the questions than all of the answers." James Thurber
"This is the most joyful day that ever I saw in my pilgrimage on earth." Donald Cargill
"Life is but thought." Sara Teasdale
