gres·so·ri·al (gr -sôr  - l, -s r-)adj. Adapted for walking or having limbs adapted for walking. Used of flightless birds. [From New Latin gress rius, from Latin gressus, step, from past participle of grad , to walk; see ghredh- in Indo-European roots.] |
gressorial [grɛˈsɔːrɪəl], gressorious
adj
1. (Life Sciences & Allied Applications / Zoology) (of the feet of certain birds) specialized for walking
2. (Life Sciences & Allied Applications / Zoology) (of birds, such as the ostrich) having such feet
[from New Latin gressōrius, from gressus having walked, from gradī to step]
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