1. The tendency of certain plant organs, as leaves, to assume special "sleeping" positions or make curl up under the influence of darkness

Derived forms: nyctitropisms

• subordinate
• subordinate clause
• subordinate conjunction
• subordinate word
• subordinateness
• subordinating
• subordinating conjunction
• subordination
• subordinative
• suborn
• subornation
• subornation of perjury
• suborner
• suboxide
• subpart
• subphylum
• subphylum Cephalochordata
• subphylum Craniata
• subphylum Pentastomida
• subphylum Tunicata
• subphylum Urochorda
• subphylum Urochordata
• subphylum Vertebrata
• subplot
• subpoena