pentagon

• n. ペンタゴン

penta-, five, -gon, side, angle, 語源はknee, heptagonと同じ。

pentagon

pentagon: see five

pentagon (n.)

plane figure with five angles and five sides, 1560s, from Middle French pentagone or directly from Late Latin pentagonum "pentagon," from Greek pentagonon, noun use of neuter of adjective pentagonos "five-angled," from pente "five" (see five) + gonia "angle" (see -gon). The U.S. military headquarters Pentagon was completed 1942, so called for its shape; used allusively for "U.S. military leadership" from 1945. Related: Pentagonal.

In nature, pentagonal symmetry is rare in inanimate forms. Packed soap bubbles seem to strive for it but never quite succeed, and there are no mineral crystals with true pentagonal structures. But pentagonal geometry is basic to many living things, from roses and forget-me-nots to sea urchins and starfish. [Robert Bringhurst, "The Elements of Typographic Style," 1992]

1. The Pentagon will give preference to companies which do business electronically.

米国防総省は、電子商取引が可能な企業を優先する。

2. Pentagon spokes-man Williams says those talks are coming along quite well.

ペンタゴンのウィリアムズ報道官は、それらの会談はかなり順調に進んでいると述べた。

3.A group of people made a circle around the Pentagon .

ペンタゴンの周りを1周する人たち。

4.The Pentagon says bad weather is hampering the allied air raids.

ペンタゴンは悪天候が連合空襲を妨げると主張している。

5.A Pentagon spokesman refused to comment.

米国防総省報道官はコメントを拒否した。