Noun

perturbation

*{{quote-journal, 2007, date=December 22, Heino F. L. Meyer-Bahlburg, Curtis Dolezal, Susan W. Baker and Maria I. New, Sexual Orientation in Women with Classical or Non-classical Congenital Adrenal Hyperplasia as a Function of Degree of Prenatal, Archives of Sexual Behavior, url=, doi=10.1007/s10508-007-9265-1, volume=37, issue=1, pages=

, passage=The developmental instability theory explains homosexuality as a perturbance of the complex processes of prenatal brain development by exogenous influences and was originally stimulated by findings of increased non-right handedness among homosexuals of both sexes (Lalumière, Blanchard, & Zucker, 2000 ), but attempts at finding an association of homosexuality with fluctuating asymmetry as a broader index of developmental instability have been unsuccessful (Rahman, 2005 ). }}

Noun

(en noun)

The act of disturbing, being disturbed.

Something that disturbs.

That guy causes a lot of trouble, you know, he's such a disturbance .

An interruption of that which is normal or regular.

* {{quote-magazine, date=2012-01

, author=Donald Worster , title=A Drier and Hotter Future , volume=100, issue=1, page=70 , magazine= citation , passage=Phoenix and Lubbock are both caught in severe drought, and it is going to get much worse. We may see many such [dust] storms in the decades ahead, along with species extinctions, radical disturbance of ecosystems, and intensified social conflict over land and water. Welcome to the Anthropocene, the epoch when humans have become a major geological and climatic force.}}

(psychology) A serious mental imbalance or illness.