M ICROBIOLOGY. Bacillus spp are aerobic spore forming rods that stain gram positive or gram variable. Except for few species the large majority have no pathogenic potential and have never been associated with disease in man or animals.Members of the genus have significant microbiological uses (42). ICROBIOLOGY. Bacillus spp are aerobic spore forming rods that stain gram positive or gram variable. Except for few species the large majority have no pathogenic potential and have never been associated with disease in man or animals. Members of the genus have significant microbiological uses (42).
yearly - occurring or payable every year; an annual trip to Paris; yearly medical examinations; annual (or yearly) income. annual. periodic, periodical - happening or recurring at regular intervals; the periodic appearance of the seventeen-year locust. annually, each year, every year.
Report Abuse. Hello, Yes, 'biannual' means twice a year. It is biennial (note the spelling is ONE letter different!!!) that means every two years. You can also use the term semi-annual for twice a year. Now I was ready to tell you different and then I looked it up in this source: http://www.bartleby.com/68/34/834.html. This is always a great source for many language questions: www.bartleby.com --I was using the 'usage' section for this question.