A few translations of Qur'an 79:30 say that the Earth is egg-shaped. For example:
And after that He has spread out the earth in the egg-shape (for habitability). -- translation by Ali Ünal
And more, He has extended the earth (far and wide also in the shape of an egg): -- translation by Syed Vickar Ahamed
First, the Earth is not egg-shaped (it's very close to a sphere; an oblate spheroid with a small eccentricity), which is apparent from photographs, e.g.:
But I'm more interested in if the Arabic in Qur'an 79:30 implies "egg-shaped", like the translations above state.
وَالْأَرْضَ بَعْدَ ذَٰلِكَ دَحَاهَا
It doesn't look like it; the "literal" translation is listed as:
And the earth after that He spread it.
which doesn't say anything about egg-shaped. It therefore seems to be an unexpected translation, so I'm puzzled as to how this came about. There's more than one translation that says this, so there may be something I'm unaware of here.
Question: Why do some translations of Qur'an 79:30 talk about the Earth being egg-shaped?