(law) A common law tort that can be brought against the third party alleged to be responsible for the failure of marriage; abolished in many jurisdictions.

(fandom slang) April 26, as a "fan holiday" celebrating the science-fiction horror franchise "Aliens". The date 4/26 is in reference to fictional planet LV-426 where the Xenomorph was first unveiled.

The coercion of a child into behaving in a hostile or fearful manner toward one of the parents.

(law) Estrangement or loss of affection between two people who have a claim on each other's affections (such as two spouses or a parent and child) that is willfully caused by interference from a third party.

(philosophy, general) a person's feeling of disconnection and/or isolation from a group – whether friends, family, or wider society – or another individual due to low degree of integration or common values

plural of coefficient of alienation

(statistics) A numerical measure of the lack of relationship between variables.

Any nucleic acid composed of bases other than adenine, guanine, thymine, uracil and cytosine and/or sugars other than ribose and deoxyribose, that could form the basis of extraterrestrial carbon-based life.

A supposed disturbance in which children are obsessively preoccupied with depreciation and/or criticism of a parent.

plural of alien nucleic acid