Wiktionary
spongiosis
n. (cx pathology English) Intercellular edema of the epidermis.
Wikipedia
Spongiosis
Spongiosis is mainly intercellular edema (abnormal accumulation of fluid) in the epidermis, and is characteristic of eczematous dermatitis, manifested clinically by intraepidermal vesicles (fluid-containing spaces), "juicy" papules, and/or lichenification.