connascency

Noun

connascence (uncountable)

1. (obsolete) The birth of two or more things at the same time; A simultaneous coming into being.
   • In Mrs Craigie I take always an especial interest. She, and dramatist, and I, as dramatic critic, saw the light simultaneously; and our connascence has insired me with a sentimental wish that she should do great things.1900 December, Max., “Two Plays”, in The Saturday Review, page 681
2. The state of being born into the same family, race, or group; a commonality of heritage or birthright.
   • No: had not Esther been involved in the edict against the Jews, by her connascence and her religious profession, Mordecai might have pleaded in vain for her perilous interference.1817, Mary Grafton, Spiritual Gleanings: or select essays, with scripture mottos, page 114
3. (obsolete) The act of growing or developing together.
   • By turns, and occasionally as it were by spontaneous connascence, were reflected on her speaking countenance, as on the clear and smooth surface of a bright mirror, the quick intelligence of a clever woman and the touching simplicity of an unsophisticated child, the vigorous energy of a heroine and...1853, James Henry Skene, Anadol; the Last Home of the Faithful, page 216
4. A relationship between two or more elements of software in which changing one necessitates changing the others in order to maintain overall correctness; a metric for such a relationship.
   • The construct of inheritance–although wildly popular in most object-oriented shops—may sometimes introduce raging connascence.2000, Meilir Page-Jones, Fundamentals of Object-Oriented Design in UML, Addison-Wesley Professional, →ISBN, page 225