Definition of "ovulum" [‖O•vu•lum]

• An ovum. (noun)
• An ovule. (noun)

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• "I shall be very anxious to know what your opinion is, particularly with regard to the tubes and all adhering filaments; the question now occupying botanists, being this, is the embryo derived directly from the boyau or is it derived from some parts of the ovulum?"
• "Previous to starting on his mission to Assam, he communicated to the Society the first two of a series of valuable papers on the development of the vegetable ovulum in"
• "I shall not say what I see, as I want to have your original opinion unbiassed, etc.; but whenever you see the tubes with filaments adhering to their apices, pray mark attentively what takes place, both at the point and at the place where the tube leaves the ovulum; your matchless 1/1500 would do the thing."