1. Having calypters 
2. Having a calyptra

See also: calypter, calyptra

• strategic buyout
• strategic intelligence
• strategic warning
• strategical
• strategically
• strategics
• strategist
• strategy
• Stratford
• Stratford-on-Avon
• Stratford-upon-Avon
• strath
• strathspey
• stratification
• stratified
• stratified language
• stratified sample
• stratified sampling
• stratiform
• stratify
• stratigraphy
• stratocracy
• stratocumulus
• stratosphere
• stratospheric