| Noun | 1. | Geraniaceae - chiefly herbaceous plants rosid dicot family - a family of dicotyledonous plants Geraniales, order Geraniales - an order of plants of subclass Rosidae including geraniums and many other plants; see Euphorbiaceae; Geraniaceae; Rutaceae; Malpighiaceae; Simaroubaceae; Meliaceae; Zygophyllaceae; Tropaeolaceae geranium - any of numerous plants of the family Geraniaceae genus Geranium - genus of mostly North American geraniums: cranesbills genus Pelargonium, Pelargonium - geraniums native chiefly to South Africa; widely cultivated Erodium, genus Erodium - geraniums of Europe and South America and Australia especially mountainous regions |