No, there is nothing that has ever indicated that it would be possible for weightlifting to contribute to lordosis.

thank you mr. aboot. was curious about it. thanks!

lor‧do‧sis  /lɔrˈdoʊsɪs/ Pronunciation Key - Show Spelled Pronunciation[lawr-doh-sis] Pronunciation Key - Show IPA Pronunciation

–noun 1. Pathology. an abnormal forward curvature of the spine in the lumbar region, resulting in a swaybacked posture. Compare kyphosis, scoliosis.
2. a posture assumed by some female mammals during mating, in which the back arches downward.