embryonic

because of the political divisiveness over such concepts as "embryo" and "embryonic stem cells," use this term with precision or, when using it metaphorically, consider an alternative: inceptive, rudimentary, incipient, beginning, initial, immature, undeveloped, untried, fledgling, unhatched, primary, unfinished, imperfect, incomplete, elementary, half-finished, developing, sketchy, preparatory, unrefined, unpolished, becoming, unfolding, yet to come, in process.