Tur·ner syndrome (tûr?n?r) also Tur·ner’s syndrome (-n?rz)n. A congenital condition of girls and women caused by complete or partial absence or deficiency of one X chromosome, characterized by short stature, a webbed neck, low-set ears, skeletal abnormalities, and infertility owing to ovarian failure.[After Henry Hubert Turner (1892-1970), American endocrinologist.]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.