introvert

noun

1. An organ or other body part that is or can be turned inside out, especially an anterior portion of some annelid worms capable of retraction.

   “Important distinctions which obtain amongst the various ‘introverts’ or intro- and e-versible tubes so frequently met with in animal bodies.”

   “Peanut worms (phylum Sipunculida) are drab-colored bottom dwellers, most of which are less then four inches long. Their body is divided into two sections: the trunk and the introvert. The introvert, the narrow neck-like anterior section, is used as a probe.”

   “When a peanut worm feeds, it extends and waves its introvert so that the mouth at the tip wanders across the seabed.”

   “The introvert is everted by hydraulic pressure exerted by contraction of body muscles on the coelomic fluid.”

2. An introverted person: one who is considered more thoughtful than social, with a personality more inwardly than outwardly directed; one who often prefers to have time in non-social situations.

   “An Extravert can hardly conceive the necessity which compels the Introvert to conquer the world by means of a system.”

   “In order to understand the marked contract between Comte's mental attitude during his early years and that of his later life, we must keep in mind Jung's hypothesis of the two psychological types, the introvert and extrovert,—the thinking type and the feeling type.”

   “All works of the imagination are conceived by men of the introvert type.”

   “The introvert abstracts from the object and deals with it by concepts concentrating upon the inner world of thought.”

   “And while her introverted clients may be feeling less stressed, and sometimes even emboldened by social distancing, Blandino said both extroverts and introverts can leverage technology to weather the storm.”

3. (figuratively, proscribed)A reserved person.

adj

1. (alt-of, alternative)Alternative form of introverted.

   “They were noticeably more introvert, schizoid and desurgent in temperament.”

verb

1. To turn inwards.

   “[…] the Soul being straight, introverted […] into itself, and easily conforming to God's will and time […]”

   “The less we look abroad, the more our ideas are introverted, and our habitual impressions... grow together into a kind of concrete substance.”

2. To turn inwards.

   “His awkward gait, his introverted toes, Bent knees, round shoulders, and dejected looks […]”