1. Ginkgos: in some systems classified as a class and in others as a subdivision; used in some classifications for one of five subdivisions of Gymnospermophyta
   - Ginkgopsida, class Ginkgopsida, Ginkgophytina, subdivision Ginkgophytina, subdivision Ginkgophyta

Type of: class

Part of: class Gymnospermae, division Gymnospermophyta, Gymnospermae, Gymnospermophyta

• Second Earl of Chatham
• Second Earl of Guilford
• Second Empire
• Second Epistel of John
• Second Epistle of Paul the Apostle to the Corinthians
• Second Epistle of Paul the Apostle to the Thessalonians
• Second Epistle of Paul the Apostle to Timothy
• Second Epistle of Peter
• Second Epistle to the Corinthians
• Second Epistle to the Thessalonians
• Second Epistle to Timothy
• second estate
• first-class honors degree
• first-class honours degree
• first-class mail
• first-come-first-serve
• first-degree burn
• first-generation
• first-nighter
• first-order correlation
• first-place finish
• first-rate
• first-rater
• first-string
• first-time buyer