| 释义 |
pentagram|ˈpɛntəgræm|
[mod. ad. Gr. πεντά-, πεντέγραµµον n. from neuter of πεντέγραµµ-ος adj., formed or consisting of five lines, f. πέντε five + γραµµή line, mark.]
1. A five-pointed figure formed by producing the sides of a pentagon both ways to their points of intersection, so as to form a five-pointed star; the ‘five straight lines’ of which the figure consists form one continuous line or ‘endless knot’. Formerly used as a mystic symbol and credited with magical virtues. (Also called pentalpha, pentacle (pentagle, pentangle), † pentagonon (-goron, -geron).)
1833Fraser's Mag. VII. 547 The pentagram was a pentagonal figure, supposed to possess the same kind of power which, amongst us, used popularly to be attributed to the horse-shoe. 1855Tennyson Brook 103 Sketching with her slender pointed foot Some figure like a wizard pentagram On garden gravel. 1878A. W. Ward Greene's Fr. Bacon ii. 51 Notes 209 The pentagramma, pentageron or pentalpha is the mystic figure ‘produced by prolonging the sides of a regular pentagon till they intersect one another. It can be drawn without a break in the drawing’. 1895A. M. Stoddart J. S. Blackie viii. 176, I found a hindrance—a pentagram—in my way, like Mephistopheles.
2. A series of five letters or characters.
1972Computer Jrnl. XV. 260/2 The peak frequencies are steadily reduced, from one occurrence of the space symbol in seven characters in the case of single characters, to a maximum frequency of approximately 600 in 1,000 documents in the case of the most frequent pentagram, TION∇. 1974Sci. Amer. Jan. 108/3 Rows 1, 2, 3, 4 and 5, in 32 parts, give the 32 pentagrams. |