theca /thēˈkə/

1. A sheath, case or sac (zoology)
2. A spore-case (botany)
3. A lobe or loculus of an anther (botany)

thēˈcal adjective

Of a theca

thēˈcate adjective

Having a theca

• open sandwich
• open sandwiches
• open score
• open scores
• open sea
• open season
• open seasons
• open secret
• open secrets
• open sentence
• open sesame
• open sesames
• open shop
• open shops
• open side
• open sides
• open sights
• open skies
• open slather
• open-source
• open-steek
• open-stitch
• open system
• open systems
• open the ball