being in complete harmony, a harmonious combination or blend, a complete whole

(anatomy) pineal body

a phenomenon of out-of-body experience - phenomenon of floating outside of one's body, and in some cases, perceiving one's physical body from a place outside one's body (autoscopy)

to have an out-of-body experience

(cytology) chloroplast

(anatomy) pyramidal tract

“a hundred days of sermonizing, one fart” → a metaphor for how something that one has put great effort into can come to nothing after even a slight mistake, much as a hundred days of serious spiritual study can be lost to the winds

tesseract; 8-cell

5-cell; regular pentachoron

(physics) radioisotope (a radioactive isotope of an element)