outlier

• POS: Noun
• HYPHEN: out=li=er

CIDE DICTIONARY

outlier, n. 

•  One who does not live where his office, or business, or estate, is.  Bentley.  [1913 Webster]
•  That which lies, or is, away from the main body.  [1913 Webster]
•  A part of a rock or stratum lying without, or beyond, the main body, from which it has been separated by denudation.  [1913 Webster]
•  A datum that lies significantly beyond the main cluster of data points on a graph or diagram; -- suggestive of an error in measurement.  [PJC]

OXFORD DICTIONARY

outlier, n.
1 (also attrib.) an outlying part or member.
2 Geol. a younger rock formation isolated in older rocks.
3 Statistics a result differing greatly from others in the same sample.