Meaning of -AD in English

-AD

[-ad] adv suffix [L ad]: in the direction of: toward "cephalad"

[2]-ad n suffix [prob. fr. NL -ad-, -as, fr. Gk, suffix denoting descent from or connection with]: member of a botanical group "bromeliad"

Merriam-Webster English vocab.      Английский словарь Merriam Webster.