Having the shape or appearance of water; resembling water in form.
From Latin 'aqua' (water) combined with '-form' (shape), used in scientific descriptions since at least the 17th century to describe substances or objects that look like or flow like water.
Chemists use this word to describe things that are runny or watery-looking, even if they're not actually water—it's basically saying 'if water had a shape, this would be it.'
Complete word intelligence in one call. Free tier — 50 lookups/day.