1) Abnormal condition 2) Abnormalcy 3) Abnormality 4) An abnormality of pregnancy 
excess of amniotic fluid, the liquid that surrounds the fetus in the uterus. Chronic hydramnios, in which fluid accumulates slowly, is fairly common, ... [1 related articles]
An abnormal condition of pregnancy characterised by an excess of amnionic fluid. ... (27 Sep 1997) ... 
(hi-dram´ne-os) polyhydramnios.
When there is too much amniotic fluid
Excessive amniotic fluid.
Type: Term Pronunciation: hī-dram′nē-os, -nē-on Definitions: 1. Presence of an excessive amount of amniotic fluid, usually over 2,000 mL. Synonyms: polyhydramnios
[n] - an abnormality of pregnancy
an excess of amniotic fluid in the uterus during pregnancy 
a condition characterized by too much amniotic fluid.
When there is too much amniotic fluid in the uterus.