Definition of "obelisk" in Anglais

noun

1. (architecture) A tall, square, tapered, stone monolith topped with a pyramidal point, frequently used as a monument.

2. (typography) Synonym of obelus.

3. (virology) An RNA structure similar to a viroid, with a rod-like secondary structure, which comprises its own phylogenetic group.

verb

1. (entomology, of a dragonfly) To adopt the obelisk posture; to point the tip of the abdomen towards the sun.