synaeresis /sin-ēˈrə-sis/

1. The running together of two vowels into one or into a diphthong (phonetics)
2. The spontaneous expulsion of liquid from a gel (chem)

• riverets
• river flat
• riverfront
• riverfronts
• river god
• river gods
• river head
• river heads
• river-hog
• river-hogs
• river horse
• river horses
• riverine
• river-jack
• river-jacks
• river-jack viper
• riverless
• riverlike
• riverman
• rivermen
• river mouth
• river mouths
• river mussel
• river mussels
• river novel