impregnation by contact alone or by wind
• (n.) Impregnation by external contact, without intromission.
Ad·os'cu·la'tion noun [ Latin adosculari , adosculatum , to kiss. See Osculate .] (Biol.) Impregnation by external contact, without intromission. 
adosculation 1. Impregnation (fertilization) by external contact, without intromission (insertion or introduction of one part into another). 2. Sexual impregnation by contact only; wind-pollination.