1. methionylthreonylthreonylglutaminylalanyl…isoleucine. You'll notice there's an ellipsis here, and that's because this word, in total, is 189,819 letters long, and it's the chemical name for the largest known protein, titin.
The sixth level of intelligence is the level of being a SUPER GENIUS. It is far higher than the genius level because super genius contains transcendental genius. Many geniuses have a kind of behavior which is perceived by others as eccentric.
From Latin genius (“inborn nature; a tutelary deity of a person or place; wit, brilliance”), from gignō (“to beget, produce”), Old Latin genō, from the Proto-Indo-European root *ǵenh₁-.
It featured a father, Jupiter, who was also the supreme divine unity, and a mother, Juno, queen of the gods. These supreme unities were subdivided into genii for each individual family; hence, the genius of each female, representing the female reproductive power, was a Juno. The male power was a Jupiter.
The Genius of the Roman people (Genius Publicus, or Populi Romani) stood in the forum, represented in the form of a bearded man crowned with a diadem, a cornucopia in his right hand, and a sceptre in his left.
These are all word used to describe someone who understands and learns new things easily. Intelligent, clever, and smart are all common ways of referring to someone who learns new things quickly and easily. Smart is more common in US English, and clever is more common in UK English.