(narratology) The first published narrative in a series of works; a narrative from which later narratives are written after. It serves as the chronological core of the series.

(cinematography) The aspect ratio of the rectangular shape that the director intended his or her motion picture to be viewed in, as opposed to modified aspect ratio.

A person (especially a scholar) interested in the Orient.

(astronomy) A diffuse nebula visible in the night sky below Orion's Belt; it is approximately 40 light years across. It is one of the brightest nebulae visible to the naked eye and is the closest region of stellar formation to Earth.

(sociology) The family in which an individual grows up.

plural of oriel

Things from the Orient, especially decorative objects from eastern Asia.

A species of pigeon, Streptopelia orientalis.

plural of oriental turtle dove

(Christianity) Adam's disobedience to God. / (Christianity) The state of sinfulness, present in each human from birth, which is a result of Adam's disobedience.