| Subject | English | German |
| gen. | lemon tree | Zitronenbaum |
| nat.sc., agric. | lemon tree | Zitronenbaum (Citrus limon(L.)Burm.f., Citrus limunum Risso) |
| bot. | lemon tree | Zitrone |
| nat.sc., agric. | lemon-tree | Zitronenbaum (Citrus limonia) |
| agric. | sweet lemon tree | Limettenbaum (Citrus limetta) |
| reptil. | yellow-lemon tree frog | Südosteuropäischer Laubfrosch (Hyla Sauromalus) |