Synonyms:
- Janus-like,
- ambidextrous,
- bifacial,
- bifold,
- biform,
- bilateral,
- binary,
- binate,
- biparous,
- bivalent,
- conduplicate,
- disomatous,
- double,
- double-faced,
- dual,
- duple,
- duplex,
- duplicate,
- filmy,
- foliaceous,
- foliated,
- geminate,
- geminated,
- in layers,
- lamellar,
- lamellate,
- lamellated,
- lamelliform,
- laminate,
- laminated,
- laminous,
- leaflike,
- leafy,
- membranous,
- scummy,
- second,
- secondary,
- spathic,
- spathose,
- stratified,
- stratiform,
- three-ply,
- twin,
- twinned,
- two-faced,
- two-level,
- two-sided,
- two-story,
- twofold