Confused and have questions? We’ve got answers. With Chegg Study, you can get step-by-step solutions to your questions from an expert in the field. If you rather get 1:1 study help, try 30 minutes of free online tutoring with Chegg Tutors.


From Biology-Online Dictionary | Biology-Online Dictionary
Jump to: navigation, search



Of, pertaining to, or characteristic of ecchymosis


The term ecchymotic is a descriptive word that is associated with ecchymosis. Ecchymosis refers to the effusion of blood underneath the skin. It is caused by a ruptured blood vessel. It is characteristically flat, rounded or irregular, and bluish or purplish in colour. Sometimes ecchymosis is used interchangeably with bruise however the former may not be necessarily caused by trauma. 1 It is also different from petechia. It is larger than petechiae, which are typically 2 millimeters to 1 centimeter in diameter.2

The word ecchymotic is used in the following terms: ecchymotic mask and ecchymotic rash. Ecchymotic mask is a dusky discoloration of the head and the neck. This results when the trunk has been subjected to sudden and extreme compression, such as in traumatic asphyxia. Ecchymotic rash is a purpura that is usually due to a contusion.

Word origin: Greek ek (out) + khéō (I pour)

See also:

Related term(s):

1 UCSF Purpura Module. Retrieved from
2 Leung, AKC; Chan, KW (August 2001). "Evaluating the Child with Purpura". American Family Physician 64 (3): 419–429.